Mercurial > hg > nginx-quic
comparison src/http/modules/ngx_http_mp4_module.c @ 4085:6492c79e943a
ngx_http_mp4_module
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 09 Sep 2011 10:22:34 +0000 |
parents | |
children | 3aa3b7bb9f0d |
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4084:b7c944d1a5a8 | 4085:6492c79e943a |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 #include <ngx_config.h> | |
7 #include <ngx_core.h> | |
8 #include <ngx_http.h> | |
9 | |
10 | |
11 #define NGX_HTTP_MP4_TRAK_ATOM 0 | |
12 #define NGX_HTTP_MP4_TKHD_ATOM 1 | |
13 #define NGX_HTTP_MP4_MDIA_ATOM 2 | |
14 #define NGX_HTTP_MP4_MDHD_ATOM 3 | |
15 #define NGX_HTTP_MP4_HDLR_ATOM 4 | |
16 #define NGX_HTTP_MP4_MINF_ATOM 5 | |
17 #define NGX_HTTP_MP4_VMHD_ATOM 6 | |
18 #define NGX_HTTP_MP4_SMHD_ATOM 7 | |
19 #define NGX_HTTP_MP4_DINF_ATOM 8 | |
20 #define NGX_HTTP_MP4_STBL_ATOM 9 | |
21 #define NGX_HTTP_MP4_STSD_ATOM 10 | |
22 #define NGX_HTTP_MP4_STTS_ATOM 11 | |
23 #define NGX_HTTP_MP4_STTS_DATA 12 | |
24 #define NGX_HTTP_MP4_STSS_ATOM 13 | |
25 #define NGX_HTTP_MP4_STSS_DATA 14 | |
26 #define NGX_HTTP_MP4_CTTS_ATOM 15 | |
27 #define NGX_HTTP_MP4_CTTS_DATA 16 | |
28 #define NGX_HTTP_MP4_STSC_ATOM 17 | |
29 #define NGX_HTTP_MP4_STSC_DATA 18 | |
30 #define NGX_HTTP_MP4_STSZ_ATOM 19 | |
31 #define NGX_HTTP_MP4_STSZ_DATA 20 | |
32 #define NGX_HTTP_MP4_STCO_ATOM 21 | |
33 #define NGX_HTTP_MP4_STCO_DATA 22 | |
34 | |
35 #define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_STCO_DATA | |
36 | |
37 | |
38 typedef struct { | |
39 size_t buffer_size; | |
40 size_t max_moov_size; | |
41 } ngx_http_mp4_conf_t; | |
42 | |
43 | |
44 typedef struct { | |
45 uint32_t timescale; | |
46 uint32_t time_to_sample_entries; | |
47 uint32_t sample_to_chunk_entries; | |
48 uint32_t sync_samples_entries; | |
49 uint32_t composition_offset_entries; | |
50 uint32_t sample_sizes_entries; | |
51 uint32_t chunks; | |
52 | |
53 ngx_uint_t start_sample; | |
54 ngx_uint_t start_chunk; | |
55 off_t start_offset; | |
56 | |
57 size_t tkhd_size; | |
58 size_t mdhd_size; | |
59 size_t hdlr_size; | |
60 size_t vmhd_size; | |
61 size_t smhd_size; | |
62 size_t dinf_size; | |
63 size_t size; | |
64 | |
65 ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1]; | |
66 | |
67 ngx_buf_t trak_atom_buf; | |
68 ngx_buf_t tkhd_atom_buf; | |
69 ngx_buf_t mdia_atom_buf; | |
70 ngx_buf_t mdhd_atom_buf; | |
71 ngx_buf_t hdlr_atom_buf; | |
72 ngx_buf_t minf_atom_buf; | |
73 ngx_buf_t vmhd_atom_buf; | |
74 ngx_buf_t smhd_atom_buf; | |
75 ngx_buf_t dinf_atom_buf; | |
76 ngx_buf_t stbl_atom_buf; | |
77 ngx_buf_t stsd_atom_buf; | |
78 ngx_buf_t stts_atom_buf; | |
79 ngx_buf_t stts_data_buf; | |
80 ngx_buf_t stss_atom_buf; | |
81 ngx_buf_t stss_data_buf; | |
82 ngx_buf_t ctts_atom_buf; | |
83 ngx_buf_t ctts_data_buf; | |
84 ngx_buf_t stsc_atom_buf; | |
85 ngx_buf_t stsc_data_buf; | |
86 ngx_buf_t stsz_atom_buf; | |
87 ngx_buf_t stsz_data_buf; | |
88 ngx_buf_t tsco_atom_buf; | |
89 ngx_buf_t tsco_data_buf; | |
90 } ngx_http_mp4_trak_t; | |
91 | |
92 | |
93 typedef struct { | |
94 ngx_file_t file; | |
95 | |
96 u_char *buffer; | |
97 u_char *buffer_start; | |
98 u_char *buffer_pos; | |
99 u_char *buffer_end; | |
100 size_t buffer_size; | |
101 | |
102 off_t offset; | |
103 off_t end; | |
104 off_t content_length; | |
105 ngx_uint_t start; | |
106 uint32_t timescale; | |
107 ngx_http_request_t *request; | |
108 ngx_array_t trak; | |
109 ngx_http_mp4_trak_t traks[2]; | |
110 | |
111 size_t ftyp_size; | |
112 size_t moov_size; | |
113 | |
114 ngx_chain_t *out; | |
115 ngx_chain_t ftyp_atom; | |
116 ngx_chain_t moov_atom; | |
117 ngx_chain_t mvhd_atom; | |
118 ngx_chain_t mdat_atom; | |
119 ngx_chain_t mdat_data; | |
120 | |
121 ngx_buf_t ftyp_atom_buf; | |
122 ngx_buf_t moov_atom_buf; | |
123 ngx_buf_t mvhd_atom_buf; | |
124 ngx_buf_t mdat_atom_buf; | |
125 ngx_buf_t mdat_data_buf; | |
126 | |
127 u_char moov_atom_header[8]; | |
128 u_char mdat_atom_header[16]; | |
129 } ngx_http_mp4_file_t; | |
130 | |
131 | |
132 typedef struct { | |
133 char *name; | |
134 ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4, | |
135 uint64_t atom_data_size); | |
136 } ngx_http_mp4_atom_handler_t; | |
137 | |
138 | |
139 #define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8) | |
140 #define ngx_mp4_atom_data(mp4) mp4->buffer_pos | |
141 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n | |
142 | |
143 | |
144 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \ | |
145 ((u_char *) (p))[4] = n1; \ | |
146 ((u_char *) (p))[5] = n2; \ | |
147 ((u_char *) (p))[6] = n3; \ | |
148 ((u_char *) (p))[7] = n4 | |
149 | |
150 #define ngx_mp4_get_32value(p) \ | |
151 ( (((u_char *) (p))[0] << 24) \ | |
152 + (((u_char *) (p))[1] << 16) \ | |
153 + (((u_char *) (p))[2] << 8) \ | |
154 + (((u_char *) (p))[3]) ) | |
155 | |
156 #define ngx_mp4_set_32value(p, n) \ | |
157 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \ | |
158 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \ | |
159 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \ | |
160 ((u_char *) (p))[3] = (u_char) (n) | |
161 | |
162 #define ngx_mp4_get_64value(p) \ | |
163 ( ((uint64_t) ((u_char *) (p))[0] << 56) \ | |
164 + ((uint64_t) ((u_char *) (p))[1] << 48) \ | |
165 + ((uint64_t) ((u_char *) (p))[2] << 40) \ | |
166 + ((uint64_t) ((u_char *) (p))[3] << 32) \ | |
167 + ((uint64_t) ((u_char *) (p))[4] << 24) \ | |
168 + ( ((u_char *) (p))[5] << 16) \ | |
169 + ( ((u_char *) (p))[6] << 8) \ | |
170 + ( ((u_char *) (p))[7]) ) | |
171 | |
172 #define ngx_mp4_set_64value(p, n) \ | |
173 ((u_char *) (p))[0] = (u_char) ((n) >> 56); \ | |
174 ((u_char *) (p))[1] = (u_char) ((n) >> 48); \ | |
175 ((u_char *) (p))[2] = (u_char) ((n) >> 40); \ | |
176 ((u_char *) (p))[3] = (u_char) ((n) >> 32); \ | |
177 ((u_char *) (p))[4] = (u_char) ((n) >> 24); \ | |
178 ((u_char *) (p))[5] = (u_char) ((n) >> 16); \ | |
179 ((u_char *) (p))[6] = (u_char) ((n) >> 8); \ | |
180 ((u_char *) (p))[7] = (u_char) (n) | |
181 | |
182 #define ngx_mp4_last_trak(mp4) \ | |
183 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1] | |
184 | |
185 | |
186 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4); | |
187 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4, | |
188 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size); | |
189 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4); | |
190 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, | |
191 uint64_t atom_data_size); | |
192 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, | |
193 uint64_t atom_data_size); | |
194 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, | |
195 uint64_t atom_data_size); | |
196 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, | |
197 off_t start_offset); | |
198 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, | |
199 uint64_t atom_data_size); | |
200 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, | |
201 uint64_t atom_data_size); | |
202 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4, | |
203 ngx_http_mp4_trak_t *trak); | |
204 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, | |
205 uint64_t atom_data_size); | |
206 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, | |
207 uint64_t atom_data_size); | |
208 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, | |
209 uint64_t atom_data_size); | |
210 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4, | |
211 ngx_http_mp4_trak_t *trak); | |
212 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, | |
213 uint64_t atom_data_size); | |
214 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, | |
215 uint64_t atom_data_size); | |
216 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, | |
217 uint64_t atom_data_size); | |
218 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4, | |
219 ngx_http_mp4_trak_t *trak); | |
220 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, | |
221 uint64_t atom_data_size); | |
222 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, | |
223 uint64_t atom_data_size); | |
224 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, | |
225 uint64_t atom_data_size); | |
226 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, | |
227 uint64_t atom_data_size); | |
228 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4, | |
229 ngx_http_mp4_trak_t *trak); | |
230 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, | |
231 uint64_t atom_data_size); | |
232 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, | |
233 uint64_t atom_data_size); | |
234 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4, | |
235 ngx_http_mp4_trak_t *trak); | |
236 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, | |
237 uint64_t atom_data_size); | |
238 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4, | |
239 ngx_http_mp4_trak_t *trak); | |
240 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, | |
241 uint64_t atom_data_size); | |
242 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4, | |
243 ngx_http_mp4_trak_t *trak); | |
244 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, | |
245 uint64_t atom_data_size); | |
246 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4, | |
247 ngx_http_mp4_trak_t *trak); | |
248 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, | |
249 uint64_t atom_data_size); | |
250 static void ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4, | |
251 ngx_http_mp4_trak_t *trak); | |
252 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, | |
253 uint64_t atom_data_size); | |
254 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4, | |
255 ngx_http_mp4_trak_t *trak); | |
256 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4, | |
257 ngx_http_mp4_trak_t *trak, int32_t adjustment); | |
258 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | |
259 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf); | |
260 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child); | |
261 | |
262 static ngx_command_t ngx_http_mp4_commands[] = { | |
263 | |
264 { ngx_string("mp4"), | |
265 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS, | |
266 ngx_http_mp4, | |
267 0, | |
268 0, | |
269 NULL }, | |
270 | |
271 { ngx_string("mp4_buffer_size"), | |
272 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
273 ngx_conf_set_size_slot, | |
274 NGX_HTTP_LOC_CONF_OFFSET, | |
275 offsetof(ngx_http_mp4_conf_t, buffer_size), | |
276 NULL }, | |
277 | |
278 { ngx_string("mp4_max_moov_size"), | |
279 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
280 ngx_conf_set_size_slot, | |
281 NGX_HTTP_LOC_CONF_OFFSET, | |
282 offsetof(ngx_http_mp4_conf_t, max_moov_size), | |
283 NULL }, | |
284 | |
285 ngx_null_command | |
286 }; | |
287 | |
288 | |
289 static ngx_http_module_t ngx_http_mp4_module_ctx = { | |
290 NULL, /* preconfiguration */ | |
291 NULL, /* postconfiguration */ | |
292 | |
293 NULL, /* create main configuration */ | |
294 NULL, /* init main configuration */ | |
295 | |
296 NULL, /* create server configuration */ | |
297 NULL, /* merge server configuration */ | |
298 | |
299 ngx_http_mp4_create_conf, /* create location configuration */ | |
300 ngx_http_mp4_merge_conf /* merge location configuration */ | |
301 }; | |
302 | |
303 | |
304 ngx_module_t ngx_http_mp4_module = { | |
305 NGX_MODULE_V1, | |
306 &ngx_http_mp4_module_ctx, /* module context */ | |
307 ngx_http_mp4_commands, /* module directives */ | |
308 NGX_HTTP_MODULE, /* module type */ | |
309 NULL, /* init master */ | |
310 NULL, /* init module */ | |
311 NULL, /* init process */ | |
312 NULL, /* init thread */ | |
313 NULL, /* exit thread */ | |
314 NULL, /* exit process */ | |
315 NULL, /* exit master */ | |
316 NGX_MODULE_V1_PADDING | |
317 }; | |
318 | |
319 | |
320 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = { | |
321 { "ftyp", ngx_http_mp4_read_ftyp_atom }, | |
322 { "moov", ngx_http_mp4_read_moov_atom }, | |
323 { "mdat", ngx_http_mp4_read_mdat_atom }, | |
324 { NULL, NULL } | |
325 }; | |
326 | |
327 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = { | |
328 { "mvhd", ngx_http_mp4_read_mvhd_atom }, | |
329 { "trak", ngx_http_mp4_read_trak_atom }, | |
330 { "cmov", ngx_http_mp4_read_cmov_atom }, | |
331 { NULL, NULL } | |
332 }; | |
333 | |
334 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = { | |
335 { "tkhd", ngx_http_mp4_read_tkhd_atom }, | |
336 { "mdia", ngx_http_mp4_read_mdia_atom }, | |
337 { NULL, NULL } | |
338 }; | |
339 | |
340 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = { | |
341 { "mdhd", ngx_http_mp4_read_mdhd_atom }, | |
342 { "hdlr", ngx_http_mp4_read_hdlr_atom }, | |
343 { "minf", ngx_http_mp4_read_minf_atom }, | |
344 { NULL, NULL } | |
345 }; | |
346 | |
347 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = { | |
348 { "vmhd", ngx_http_mp4_read_vmhd_atom }, | |
349 { "smhd", ngx_http_mp4_read_smhd_atom }, | |
350 { "dinf", ngx_http_mp4_read_dinf_atom }, | |
351 { "stbl", ngx_http_mp4_read_stbl_atom }, | |
352 { NULL, NULL } | |
353 }; | |
354 | |
355 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = { | |
356 { "stsd", ngx_http_mp4_read_stsd_atom }, | |
357 { "stts", ngx_http_mp4_read_stts_atom }, | |
358 { "stss", ngx_http_mp4_read_stss_atom }, | |
359 { "ctts", ngx_http_mp4_read_ctts_atom }, | |
360 { "stsc", ngx_http_mp4_read_stsc_atom }, | |
361 { "stsz", ngx_http_mp4_read_stsz_atom }, | |
362 { "stco", ngx_http_mp4_read_stco_atom }, | |
363 { NULL, NULL } | |
364 }; | |
365 | |
366 | |
367 static ngx_int_t | |
368 ngx_http_mp4_handler(ngx_http_request_t *r) | |
369 { | |
370 u_char *last; | |
371 size_t root; | |
372 ngx_int_t rc, start; | |
373 ngx_uint_t level; | |
374 ngx_str_t path, value; | |
375 ngx_log_t *log; | |
376 ngx_buf_t *b; | |
377 ngx_chain_t out; | |
378 ngx_http_mp4_file_t *mp4; | |
379 ngx_open_file_info_t of; | |
380 ngx_http_core_loc_conf_t *clcf; | |
381 | |
382 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { | |
383 return NGX_HTTP_NOT_ALLOWED; | |
384 } | |
385 | |
386 if (r->uri.data[r->uri.len - 1] == '/') { | |
387 return NGX_DECLINED; | |
388 } | |
389 | |
390 rc = ngx_http_discard_request_body(r); | |
391 | |
392 if (rc != NGX_OK) { | |
393 return rc; | |
394 } | |
395 | |
396 last = ngx_http_map_uri_to_path(r, &path, &root, 0); | |
397 if (last == NULL) { | |
398 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
399 } | |
400 | |
401 log = r->connection->log; | |
402 | |
403 path.len = last - path.data; | |
404 | |
405 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, | |
406 "http mp4 filename: \"%V\"", &path); | |
407 | |
408 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
409 | |
410 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); | |
411 | |
412 of.read_ahead = clcf->read_ahead; | |
413 of.valid = clcf->open_file_cache_valid; | |
414 of.min_uses = clcf->open_file_cache_min_uses; | |
415 of.errors = clcf->open_file_cache_errors; | |
416 of.events = clcf->open_file_cache_events; | |
417 | |
418 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) | |
419 != NGX_OK) | |
420 { | |
421 switch (of.err) { | |
422 | |
423 case 0: | |
424 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
425 | |
426 case NGX_ENOENT: | |
427 case NGX_ENOTDIR: | |
428 case NGX_ENAMETOOLONG: | |
429 | |
430 level = NGX_LOG_ERR; | |
431 rc = NGX_HTTP_NOT_FOUND; | |
432 break; | |
433 | |
434 case NGX_EACCES: | |
435 | |
436 level = NGX_LOG_ERR; | |
437 rc = NGX_HTTP_FORBIDDEN; | |
438 break; | |
439 | |
440 default: | |
441 | |
442 level = NGX_LOG_CRIT; | |
443 rc = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
444 break; | |
445 } | |
446 | |
447 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) { | |
448 ngx_log_error(level, log, of.err, | |
449 "%s \"%s\" failed", of.failed, path.data); | |
450 } | |
451 | |
452 return rc; | |
453 } | |
454 | |
455 if (!of.is_file) { | |
456 | |
457 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) { | |
458 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
459 ngx_close_file_n " \"%s\" failed", path.data); | |
460 } | |
461 | |
462 return NGX_DECLINED; | |
463 } | |
464 | |
465 r->root_tested = !r->error_page; | |
466 r->allow_ranges = 1; | |
467 | |
468 start = -1; | |
469 r->headers_out.content_length_n = of.size; | |
470 mp4 = NULL; | |
471 b = NULL; | |
472 | |
473 if (r->args.len) { | |
474 | |
475 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) { | |
476 | |
477 start = ngx_atofp(value.data, value.len, 3); | |
478 | |
479 if (start != NGX_ERROR) { | |
480 r->allow_ranges = 0; | |
481 | |
482 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t)); | |
483 if (mp4 == NULL) { | |
484 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
485 } | |
486 | |
487 mp4->file.fd = of.fd; | |
488 mp4->file.name = path; | |
489 mp4->file.log = r->connection->log;; | |
490 mp4->end = of.size; | |
491 mp4->start = (ngx_uint_t) start; | |
492 mp4->request = r; | |
493 | |
494 switch (ngx_http_mp4_process(mp4)) { | |
495 | |
496 case NGX_DECLINED: | |
497 if (mp4->buffer) { | |
498 ngx_pfree(r->pool, mp4->buffer); | |
499 } | |
500 | |
501 ngx_pfree(r->pool, mp4); | |
502 mp4 = NULL; | |
503 | |
504 break; | |
505 | |
506 case NGX_OK: | |
507 r->headers_out.content_length_n = mp4->content_length; | |
508 break; | |
509 | |
510 default: /* NGX_ERROR */ | |
511 if (mp4->buffer) { | |
512 ngx_pfree(r->pool, mp4->buffer); | |
513 } | |
514 | |
515 ngx_pfree(r->pool, mp4); | |
516 | |
517 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
518 } | |
519 } | |
520 } | |
521 } | |
522 | |
523 log->action = "sending mp4 to client"; | |
524 | |
525 if (clcf->directio <= of.size) { | |
526 | |
527 /* | |
528 * DIRECTIO is set on transfer only | |
529 * to allow kernel to cache "moov" atom | |
530 */ | |
531 | |
532 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) { | |
533 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
534 ngx_directio_on_n " \"%s\" failed", path.data); | |
535 } | |
536 | |
537 if (mp4) { | |
538 mp4->file.directio = 1; | |
539 } | |
540 } | |
541 | |
542 r->headers_out.status = NGX_HTTP_OK; | |
543 r->headers_out.last_modified_time = of.mtime; | |
544 | |
545 if (ngx_http_set_content_type(r) != NGX_OK) { | |
546 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
547 } | |
548 | |
549 if (mp4 == NULL) { | |
550 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
551 if (b == NULL) { | |
552 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
553 } | |
554 | |
555 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); | |
556 if (b->file == NULL) { | |
557 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
558 } | |
559 } | |
560 | |
561 rc = ngx_http_send_header(r); | |
562 | |
563 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
564 return rc; | |
565 } | |
566 | |
567 if (mp4) { | |
568 return ngx_http_output_filter(r, mp4->out); | |
569 } | |
570 | |
571 b->file_pos = 0; | |
572 b->file_last = of.size; | |
573 | |
574 b->in_file = b->file_last ? 1 : 0; | |
575 b->last_buf = 1; | |
576 b->last_in_chain = 1; | |
577 | |
578 b->file->fd = of.fd; | |
579 b->file->name = path; | |
580 b->file->log = log; | |
581 b->file->directio = of.is_directio; | |
582 | |
583 out.buf = b; | |
584 out.next = NULL; | |
585 | |
586 return ngx_http_output_filter(r, &out); | |
587 } | |
588 | |
589 | |
590 static ngx_int_t | |
591 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4) | |
592 { | |
593 off_t start_offset, adjustment; | |
594 ngx_int_t rc; | |
595 ngx_uint_t i, j; | |
596 ngx_chain_t **prev; | |
597 ngx_http_mp4_trak_t *trak; | |
598 ngx_http_mp4_conf_t *conf; | |
599 | |
600 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
601 "mp4 start:%ui", mp4->start); | |
602 | |
603 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module); | |
604 | |
605 mp4->buffer_size = conf->buffer_size; | |
606 | |
607 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end); | |
608 if (rc != NGX_OK) { | |
609 return rc; | |
610 } | |
611 | |
612 if (mp4->trak.nelts == 0) { | |
613 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
614 "no mp4 trak atoms were found in \"%s\"", | |
615 mp4->file.name.data); | |
616 return NGX_ERROR; | |
617 } | |
618 | |
619 if (mp4->mdat_atom.buf == NULL) { | |
620 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
621 "no mp4 mdat atom was found in \"%s\"", | |
622 mp4->file.name.data); | |
623 return NGX_ERROR; | |
624 } | |
625 | |
626 prev = &mp4->out; | |
627 | |
628 if (mp4->ftyp_atom.buf) { | |
629 *prev = &mp4->ftyp_atom; | |
630 prev = &mp4->ftyp_atom.next; | |
631 } | |
632 | |
633 *prev = &mp4->moov_atom; | |
634 prev = &mp4->moov_atom.next; | |
635 | |
636 if (mp4->mvhd_atom.buf) { | |
637 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos; | |
638 *prev = &mp4->mvhd_atom; | |
639 prev = &mp4->mvhd_atom.next; | |
640 } | |
641 | |
642 start_offset = mp4->end; | |
643 trak = mp4->trak.elts; | |
644 | |
645 for (i = 0; i < mp4->trak.nelts; i++) { | |
646 | |
647 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) { | |
648 return NGX_ERROR; | |
649 } | |
650 | |
651 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) { | |
652 return NGX_ERROR; | |
653 } | |
654 | |
655 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]); | |
656 | |
657 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) { | |
658 return NGX_ERROR; | |
659 } | |
660 | |
661 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]); | |
662 | |
663 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) { | |
664 return NGX_ERROR; | |
665 } | |
666 | |
667 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]); | |
668 ngx_http_mp4_update_minf_atom(mp4, &trak[i]); | |
669 trak[i].size += trak[i].mdhd_size; | |
670 trak[i].size += trak[i].hdlr_size; | |
671 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]); | |
672 trak[i].size += trak[i].tkhd_size; | |
673 ngx_http_mp4_update_trak_atom(mp4, &trak[i]); | |
674 | |
675 mp4->moov_size += trak[i].size; | |
676 | |
677 if (start_offset > trak[i].start_offset) { | |
678 start_offset = trak[i].start_offset; | |
679 } | |
680 | |
681 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM]; | |
682 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next; | |
683 | |
684 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) { | |
685 if (trak[i].out[j].buf) { | |
686 *prev = &trak[i].out[j]; | |
687 prev = &trak[i].out[j].next; | |
688 } | |
689 } | |
690 } | |
691 | |
692 mp4->moov_size += 8; | |
693 | |
694 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size); | |
695 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v'); | |
696 mp4->content_length += mp4->moov_size; | |
697 | |
698 *prev = &mp4->mdat_atom; | |
699 | |
700 adjustment = mp4->ftyp_size + mp4->moov_size | |
701 + ngx_http_mp4_update_mdat_atom(mp4, start_offset) | |
702 - start_offset; | |
703 | |
704 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
705 "mp4 adjustment:%D", adjustment); | |
706 | |
707 for (i = 0; i < mp4->trak.nelts; i++) { | |
708 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment); | |
709 } | |
710 | |
711 return NGX_OK; | |
712 } | |
713 | |
714 | |
715 typedef struct { | |
716 u_char size[4]; | |
717 u_char name[4]; | |
718 } ngx_mp4_atom_header_t; | |
719 | |
720 typedef struct { | |
721 u_char size[4]; | |
722 u_char name[4]; | |
723 u_char size64[8]; | |
724 } ngx_mp4_atom_header64_t; | |
725 | |
726 | |
727 static ngx_int_t | |
728 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4, | |
729 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size) | |
730 { | |
731 off_t end; | |
732 size_t atom_header_size; | |
733 u_char *atom_header, *atom_name; | |
734 uint64_t atom_size; | |
735 ngx_int_t rc; | |
736 ngx_uint_t n; | |
737 | |
738 end = mp4->offset + atom_data_size; | |
739 | |
740 while (mp4->offset < end) { | |
741 | |
742 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) { | |
743 if (ngx_http_mp4_read(mp4) != NGX_OK) { | |
744 return NGX_ERROR; | |
745 } | |
746 } | |
747 | |
748 atom_header = mp4->buffer_pos; | |
749 atom_size = ngx_mp4_get_32value(atom_header); | |
750 atom_header_size = sizeof(ngx_mp4_atom_header_t); | |
751 | |
752 if (atom_size == 0) { | |
753 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
754 "mp4 atom end"); | |
755 return NGX_OK; | |
756 } | |
757 | |
758 if (atom_size < sizeof(ngx_mp4_atom_header_t)) { | |
759 | |
760 if (atom_size == 1) { | |
761 | |
762 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t) | |
763 > mp4->buffer_end) | |
764 { | |
765 if (ngx_http_mp4_read(mp4) != NGX_OK) { | |
766 return NGX_ERROR; | |
767 } | |
768 | |
769 atom_header = mp4->buffer_pos; | |
770 } | |
771 | |
772 /* 64-bit atom size */ | |
773 atom_size = ngx_mp4_get_64value(atom_header + 8); | |
774 atom_header_size = sizeof(ngx_mp4_atom_header64_t); | |
775 | |
776 } else { | |
777 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
778 "\"%s\" mp4 atom is too small:%uL", | |
779 mp4->file.name.data, atom_size); | |
780 return NGX_ERROR; | |
781 } | |
782 } | |
783 | |
784 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) { | |
785 if (ngx_http_mp4_read(mp4) != NGX_OK) { | |
786 return NGX_ERROR; | |
787 } | |
788 | |
789 atom_header = mp4->buffer_pos; | |
790 } | |
791 | |
792 atom_name = atom_header + sizeof(uint32_t); | |
793 | |
794 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
795 "mp4 atom: %*s @%O:%uL", | |
796 4, atom_name, mp4->offset, atom_size); | |
797 | |
798 for (n = 0; atom[n].name; n++) { | |
799 | |
800 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) { | |
801 | |
802 ngx_mp4_atom_next(mp4, atom_header_size); | |
803 | |
804 rc = atom[n].handler(mp4, atom_size - atom_header_size); | |
805 if (rc != NGX_OK) { | |
806 return rc; | |
807 } | |
808 | |
809 goto next; | |
810 } | |
811 } | |
812 | |
813 ngx_mp4_atom_next(mp4, atom_size); | |
814 | |
815 next: | |
816 continue; | |
817 } | |
818 | |
819 return NGX_OK; | |
820 } | |
821 | |
822 | |
823 static ngx_int_t | |
824 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4) | |
825 { | |
826 ngx_int_t n; | |
827 | |
828 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) { | |
829 mp4->buffer_size = (size_t) (mp4->end - mp4->offset); | |
830 } | |
831 | |
832 if (mp4->buffer == NULL) { | |
833 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size); | |
834 if (mp4->buffer == NULL) { | |
835 return NGX_ERROR; | |
836 } | |
837 | |
838 mp4->buffer_start = mp4->buffer; | |
839 mp4->buffer_end = mp4->buffer + mp4->buffer_size; | |
840 } | |
841 | |
842 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size, | |
843 mp4->offset); | |
844 | |
845 if (n == NGX_ERROR) { | |
846 return NGX_ERROR; | |
847 } | |
848 | |
849 if (n == 0) { | |
850 return NGX_OK; | |
851 } | |
852 | |
853 mp4->buffer_pos = mp4->buffer_start; | |
854 | |
855 return NGX_OK; | |
856 } | |
857 | |
858 | |
859 static ngx_int_t | |
860 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
861 { | |
862 u_char *ftyp_atom; | |
863 size_t atom_size; | |
864 ngx_buf_t *atom; | |
865 | |
866 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom"); | |
867 | |
868 if (atom_data_size > 1024) { | |
869 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
870 "\"%s\" mp4 ftyp atom is too large:%uL", | |
871 mp4->file.name.data, atom_data_size); | |
872 return NGX_ERROR; | |
873 } | |
874 | |
875 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
876 | |
877 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size); | |
878 if (ftyp_atom == NULL) { | |
879 return NGX_ERROR; | |
880 } | |
881 | |
882 ngx_mp4_set_32value(ftyp_atom, atom_size); | |
883 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p'); | |
884 | |
885 /* | |
886 * only moov atom content is guaranteed to be in mp4->buffer | |
887 * during sending response, so ftyp atom content should be copied | |
888 */ | |
889 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t), | |
890 ngx_mp4_atom_data(mp4), (size_t) atom_data_size); | |
891 | |
892 atom = &mp4->ftyp_atom_buf; | |
893 atom->temporary = 1; | |
894 atom->pos = ftyp_atom; | |
895 atom->last = ftyp_atom + atom_size; | |
896 | |
897 mp4->ftyp_atom.buf = atom; | |
898 mp4->ftyp_size = atom_size; | |
899 mp4->content_length = atom_size; | |
900 | |
901 ngx_mp4_atom_next(mp4, atom_data_size); | |
902 | |
903 return NGX_OK; | |
904 } | |
905 | |
906 | |
907 /* | |
908 * Small excess buffer to process atoms after moov atom, mp4->buffer_start | |
909 * will be set to this buffer part after moov atom processing. | |
910 */ | |
911 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024) | |
912 | |
913 static ngx_int_t | |
914 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
915 { | |
916 ngx_int_t rc; | |
917 ngx_uint_t no_mdat; | |
918 ngx_buf_t *atom; | |
919 ngx_http_mp4_conf_t *conf; | |
920 | |
921 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom"); | |
922 | |
923 no_mdat = (mp4->mdat_atom.buf == NULL); | |
924 | |
925 if (no_mdat && mp4->start == 0) { | |
926 /* | |
927 * send original file if moov atom resides before | |
928 * mdat atom and client requests integral file | |
929 */ | |
930 return NGX_DECLINED; | |
931 } | |
932 | |
933 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module); | |
934 | |
935 if (atom_data_size > mp4->buffer_size) { | |
936 | |
937 if (atom_data_size > conf->max_moov_size) { | |
938 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
939 "\"%s\" mp4 moov atom is too large:%uL, " | |
940 "you may want to increase mp4_max_moov_size", | |
941 mp4->file.name.data, atom_data_size); | |
942 return NGX_ERROR; | |
943 } | |
944 | |
945 ngx_pfree(mp4->request->pool, mp4->buffer); | |
946 mp4->buffer = NULL; | |
947 mp4->buffer_pos = NULL; | |
948 mp4->buffer_end = NULL; | |
949 | |
950 mp4->buffer_size = (size_t) atom_data_size | |
951 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat; | |
952 } | |
953 | |
954 mp4->trak.elts = &mp4->traks; | |
955 mp4->trak.size = sizeof(ngx_http_mp4_trak_t); | |
956 mp4->trak.nalloc = 2; | |
957 mp4->trak.pool = mp4->request->pool; | |
958 | |
959 atom = &mp4->moov_atom_buf; | |
960 atom->temporary = 1; | |
961 atom->pos = mp4->moov_atom_header; | |
962 atom->last = mp4->moov_atom_header + 8; | |
963 | |
964 mp4->moov_atom.buf = &mp4->moov_atom_buf; | |
965 | |
966 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size); | |
967 | |
968 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done"); | |
969 | |
970 if (no_mdat) { | |
971 mp4->buffer_start = mp4->buffer_pos; | |
972 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS; | |
973 | |
974 } else { | |
975 /* skip atoms after moov atom */ | |
976 mp4->offset = mp4->end; | |
977 } | |
978 | |
979 return rc; | |
980 } | |
981 | |
982 | |
983 static ngx_int_t | |
984 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
985 { | |
986 ngx_buf_t *data; | |
987 | |
988 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom"); | |
989 | |
990 data = &mp4->mdat_data_buf; | |
991 data->file = &mp4->file; | |
992 data->in_file = 1; | |
993 data->last_buf = 1; | |
994 data->last_in_chain = 1; | |
995 data->file_last = mp4->offset + atom_data_size; | |
996 | |
997 mp4->mdat_atom.buf = &mp4->mdat_atom_buf; | |
998 mp4->mdat_atom.next = &mp4->mdat_data; | |
999 mp4->mdat_data.buf = data; | |
1000 | |
1001 if (mp4->trak.nelts) { | |
1002 /* skip atoms after mdat atom */ | |
1003 mp4->offset = mp4->end; | |
1004 | |
1005 } else { | |
1006 ngx_mp4_atom_next(mp4, atom_data_size); | |
1007 } | |
1008 | |
1009 return NGX_OK; | |
1010 } | |
1011 | |
1012 | |
1013 static size_t | |
1014 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset) | |
1015 { | |
1016 off_t atom_data_size; | |
1017 u_char *atom_header; | |
1018 uint32_t atom_header_size; | |
1019 uint64_t atom_size; | |
1020 ngx_buf_t *atom; | |
1021 | |
1022 atom_data_size = mp4->mdat_data.buf->file_last - start_offset; | |
1023 mp4->mdat_data.buf->file_pos = start_offset; | |
1024 mp4->content_length += atom_data_size; | |
1025 | |
1026 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1027 "mdat new offset @%O:%O", start_offset, atom_data_size); | |
1028 | |
1029 atom_header = mp4->mdat_atom_header; | |
1030 | |
1031 if (atom_data_size > 0xffffffff) { | |
1032 atom_size = 1; | |
1033 atom_header_size = sizeof(ngx_mp4_atom_header64_t); | |
1034 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t), | |
1035 sizeof(ngx_mp4_atom_header64_t) + atom_data_size); | |
1036 } else { | |
1037 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size; | |
1038 atom_header_size = sizeof(ngx_mp4_atom_header_t); | |
1039 } | |
1040 | |
1041 ngx_mp4_set_32value(atom_header, atom_size); | |
1042 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't'); | |
1043 | |
1044 atom = &mp4->mdat_atom_buf; | |
1045 atom->temporary = 1; | |
1046 atom->pos = atom_header; | |
1047 atom->last = atom_header + atom_header_size; | |
1048 | |
1049 return atom_header_size; | |
1050 } | |
1051 | |
1052 | |
1053 typedef struct { | |
1054 u_char size[4]; | |
1055 u_char name[4]; | |
1056 u_char version[1]; | |
1057 u_char flags[3]; | |
1058 u_char creation_time[4]; | |
1059 u_char modification_time[4]; | |
1060 u_char timescale[4]; | |
1061 u_char duration[4]; | |
1062 u_char rate[4]; | |
1063 u_char volume[2]; | |
1064 u_char reserved[10]; | |
1065 u_char matrix[36]; | |
1066 u_char preview_time[4]; | |
1067 u_char preview_duration[4]; | |
1068 u_char poster_time[4]; | |
1069 u_char selection_time[4]; | |
1070 u_char selection_duration[4]; | |
1071 u_char current_time[4]; | |
1072 u_char next_track_id[4]; | |
1073 } ngx_mp4_mvhd_atom_t; | |
1074 | |
1075 typedef struct { | |
1076 u_char size[4]; | |
1077 u_char name[4]; | |
1078 u_char version[1]; | |
1079 u_char flags[3]; | |
1080 u_char creation_time[8]; | |
1081 u_char modification_time[8]; | |
1082 u_char timescale[4]; | |
1083 u_char duration[8]; | |
1084 u_char rate[4]; | |
1085 u_char volume[2]; | |
1086 u_char reserved[10]; | |
1087 u_char matrix[36]; | |
1088 u_char preview_time[4]; | |
1089 u_char preview_duration[4]; | |
1090 u_char poster_time[4]; | |
1091 u_char selection_time[4]; | |
1092 u_char selection_duration[4]; | |
1093 u_char current_time[4]; | |
1094 u_char next_track_id[4]; | |
1095 } ngx_mp4_mvhd64_atom_t; | |
1096 | |
1097 | |
1098 static ngx_int_t | |
1099 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1100 { | |
1101 u_char *atom_header; | |
1102 size_t atom_size; | |
1103 uint32_t timescale; | |
1104 uint64_t duration; | |
1105 ngx_buf_t *atom; | |
1106 ngx_mp4_mvhd_atom_t *mvhd_atom; | |
1107 ngx_mp4_mvhd64_atom_t *mvhd64_atom; | |
1108 | |
1109 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom"); | |
1110 | |
1111 atom_header = ngx_mp4_atom_header(mp4); | |
1112 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header; | |
1113 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header; | |
1114 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd'); | |
1115 | |
1116 if (mvhd_atom->version[0] == 0) { | |
1117 /* version 0: 32-bit duration */ | |
1118 timescale = ngx_mp4_get_32value(mvhd_atom->timescale); | |
1119 duration = ngx_mp4_get_32value(mvhd_atom->duration); | |
1120 | |
1121 } else { | |
1122 /* version 1: 64-bit duration */ | |
1123 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale); | |
1124 duration = ngx_mp4_get_64value(mvhd64_atom->duration); | |
1125 } | |
1126 | |
1127 mp4->timescale = timescale; | |
1128 | |
1129 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1130 "mvhd timescale:%uD, duration:%uL, time:%.3fs", | |
1131 timescale, duration, (double) duration / timescale); | |
1132 | |
1133 duration -= (uint64_t) mp4->start * timescale / 1000; | |
1134 | |
1135 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1136 "mvhd new duration:%uL, time:%.3fs", | |
1137 duration, (double) duration / timescale); | |
1138 | |
1139 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1140 ngx_mp4_set_32value(mvhd_atom->size, atom_size); | |
1141 | |
1142 if (mvhd_atom->version[0] == 0) { | |
1143 ngx_mp4_set_32value(mvhd_atom->duration, duration); | |
1144 | |
1145 } else { | |
1146 ngx_mp4_set_64value(mvhd64_atom->duration, duration); | |
1147 } | |
1148 | |
1149 atom = &mp4->mvhd_atom_buf; | |
1150 atom->temporary = 1; | |
1151 atom->pos = atom_header; | |
1152 atom->last = atom_header + atom_size; | |
1153 | |
1154 mp4->mvhd_atom.buf = atom; | |
1155 | |
1156 ngx_mp4_atom_next(mp4, atom_data_size); | |
1157 | |
1158 return NGX_OK; | |
1159 } | |
1160 | |
1161 | |
1162 static ngx_int_t | |
1163 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1164 { | |
1165 u_char *atom_header; | |
1166 ngx_buf_t *atom; | |
1167 ngx_http_mp4_trak_t *trak; | |
1168 | |
1169 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom"); | |
1170 | |
1171 trak = ngx_array_push(&mp4->trak); | |
1172 if (trak == NULL) { | |
1173 return NGX_ERROR; | |
1174 } | |
1175 | |
1176 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t)); | |
1177 | |
1178 atom_header = ngx_mp4_atom_header(mp4); | |
1179 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k'); | |
1180 | |
1181 atom = &trak->trak_atom_buf; | |
1182 atom->temporary = 1; | |
1183 atom->pos = atom_header; | |
1184 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); | |
1185 | |
1186 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom; | |
1187 | |
1188 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size); | |
1189 } | |
1190 | |
1191 | |
1192 static void | |
1193 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4, | |
1194 ngx_http_mp4_trak_t *trak) | |
1195 { | |
1196 ngx_buf_t *atom; | |
1197 | |
1198 trak->size += sizeof(ngx_mp4_atom_header_t); | |
1199 atom = &trak->trak_atom_buf; | |
1200 ngx_mp4_set_32value(atom->pos, trak->size); | |
1201 } | |
1202 | |
1203 | |
1204 static ngx_int_t | |
1205 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1206 { | |
1207 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1208 "\"%s\" mp4 compressed moov atom (cmov) is not supported", | |
1209 mp4->file.name.data); | |
1210 | |
1211 return NGX_ERROR; | |
1212 } | |
1213 | |
1214 | |
1215 typedef struct { | |
1216 u_char size[4]; | |
1217 u_char name[4]; | |
1218 u_char version[1]; | |
1219 u_char flags[3]; | |
1220 u_char creation_time[4]; | |
1221 u_char modification_time[4]; | |
1222 u_char track_id[4]; | |
1223 u_char reserved1[4]; | |
1224 u_char duration[4]; | |
1225 u_char reserved2[8]; | |
1226 u_char layer[2]; | |
1227 u_char group[2]; | |
1228 u_char volume[2]; | |
1229 u_char reverved3[2]; | |
1230 u_char matrix[36]; | |
1231 u_char width[4]; | |
1232 u_char heigth[4]; | |
1233 } ngx_mp4_tkhd_atom_t; | |
1234 | |
1235 typedef struct { | |
1236 u_char size[4]; | |
1237 u_char name[4]; | |
1238 u_char version[1]; | |
1239 u_char flags[3]; | |
1240 u_char creation_time[8]; | |
1241 u_char modification_time[8]; | |
1242 u_char track_id[4]; | |
1243 u_char reserved1[4]; | |
1244 u_char duration[8]; | |
1245 u_char reserved2[8]; | |
1246 u_char layer[2]; | |
1247 u_char group[2]; | |
1248 u_char volume[2]; | |
1249 u_char reverved3[2]; | |
1250 u_char matrix[36]; | |
1251 u_char width[4]; | |
1252 u_char heigth[4]; | |
1253 } ngx_mp4_tkhd64_atom_t; | |
1254 | |
1255 | |
1256 static ngx_int_t | |
1257 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1258 { | |
1259 u_char *atom_header; | |
1260 size_t atom_size; | |
1261 uint64_t duration; | |
1262 ngx_buf_t *atom; | |
1263 ngx_http_mp4_trak_t *trak; | |
1264 ngx_mp4_tkhd_atom_t *tkhd_atom; | |
1265 ngx_mp4_tkhd64_atom_t *tkhd64_atom; | |
1266 | |
1267 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom"); | |
1268 | |
1269 atom_header = ngx_mp4_atom_header(mp4); | |
1270 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header; | |
1271 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header; | |
1272 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd'); | |
1273 | |
1274 if (tkhd_atom->version[0] == 0) { | |
1275 /* version 0: 32-bit duration */ | |
1276 duration = ngx_mp4_get_32value(tkhd_atom->duration); | |
1277 | |
1278 } else { | |
1279 /* version 1: 64-bit duration */ | |
1280 duration = ngx_mp4_get_64value(tkhd64_atom->duration); | |
1281 } | |
1282 | |
1283 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1284 "tkhd duration:%uL, time:%.3fs", | |
1285 duration, (double) duration / mp4->timescale); | |
1286 | |
1287 duration -= (uint64_t) mp4->start * mp4->timescale / 1000; | |
1288 | |
1289 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1290 "tkhd new duration:%uL, time:%.3fs", | |
1291 duration, (double) duration / mp4->timescale); | |
1292 | |
1293 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1294 | |
1295 trak = ngx_mp4_last_trak(mp4); | |
1296 trak->tkhd_size = atom_size; | |
1297 | |
1298 ngx_mp4_set_32value(tkhd_atom->size, atom_size); | |
1299 | |
1300 if (tkhd_atom->version[0] == 0) { | |
1301 ngx_mp4_set_32value(tkhd_atom->duration, duration); | |
1302 | |
1303 } else { | |
1304 ngx_mp4_set_64value(tkhd64_atom->duration, duration); | |
1305 } | |
1306 | |
1307 atom = &trak->tkhd_atom_buf; | |
1308 atom->temporary = 1; | |
1309 atom->pos = atom_header; | |
1310 atom->last = atom_header + atom_size; | |
1311 | |
1312 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom; | |
1313 | |
1314 ngx_mp4_atom_next(mp4, atom_data_size); | |
1315 | |
1316 return NGX_OK; | |
1317 } | |
1318 | |
1319 | |
1320 static ngx_int_t | |
1321 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1322 { | |
1323 u_char *atom_header; | |
1324 ngx_buf_t *atom; | |
1325 ngx_http_mp4_trak_t *trak; | |
1326 | |
1327 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom"); | |
1328 | |
1329 atom_header = ngx_mp4_atom_header(mp4); | |
1330 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a'); | |
1331 | |
1332 trak = ngx_mp4_last_trak(mp4); | |
1333 | |
1334 atom = &trak->mdia_atom_buf; | |
1335 atom->temporary = 1; | |
1336 atom->pos = atom_header; | |
1337 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); | |
1338 | |
1339 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom; | |
1340 | |
1341 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size); | |
1342 } | |
1343 | |
1344 | |
1345 static void | |
1346 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4, | |
1347 ngx_http_mp4_trak_t *trak) | |
1348 { | |
1349 ngx_buf_t *atom; | |
1350 | |
1351 trak->size += sizeof(ngx_mp4_atom_header_t); | |
1352 atom = &trak->mdia_atom_buf; | |
1353 ngx_mp4_set_32value(atom->pos, trak->size); | |
1354 } | |
1355 | |
1356 | |
1357 typedef struct { | |
1358 u_char size[4]; | |
1359 u_char name[4]; | |
1360 u_char version[1]; | |
1361 u_char flags[3]; | |
1362 u_char creation_time[4]; | |
1363 u_char modification_time[4]; | |
1364 u_char timescale[4]; | |
1365 u_char duration[4]; | |
1366 u_char language[2]; | |
1367 u_char quality[2]; | |
1368 } ngx_mp4_mdhd_atom_t; | |
1369 | |
1370 typedef struct { | |
1371 u_char size[4]; | |
1372 u_char name[4]; | |
1373 u_char version[1]; | |
1374 u_char flags[3]; | |
1375 u_char creation_time[8]; | |
1376 u_char modification_time[8]; | |
1377 u_char timescale[4]; | |
1378 u_char duration[8]; | |
1379 u_char language[2]; | |
1380 u_char quality[2]; | |
1381 } ngx_mp4_mdhd64_atom_t; | |
1382 | |
1383 | |
1384 static ngx_int_t | |
1385 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1386 { | |
1387 u_char *atom_header; | |
1388 size_t atom_size; | |
1389 uint32_t timescale; | |
1390 uint64_t duration; | |
1391 ngx_buf_t *atom; | |
1392 ngx_http_mp4_trak_t *trak; | |
1393 ngx_mp4_mdhd_atom_t *mdhd_atom; | |
1394 ngx_mp4_mdhd64_atom_t *mdhd64_atom; | |
1395 | |
1396 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom"); | |
1397 | |
1398 atom_header = ngx_mp4_atom_header(mp4); | |
1399 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header; | |
1400 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header; | |
1401 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd'); | |
1402 | |
1403 if (mdhd_atom->version[0] == 0) { | |
1404 /* version 0: everything is 32-bit */ | |
1405 timescale = ngx_mp4_get_32value(mdhd_atom->timescale); | |
1406 duration = ngx_mp4_get_32value(mdhd_atom->duration); | |
1407 | |
1408 } else { | |
1409 /* version 1: 64-bit duration and 32-bit timescale */ | |
1410 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale); | |
1411 duration = ngx_mp4_get_64value(mdhd64_atom->duration); | |
1412 } | |
1413 | |
1414 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1415 "mdhd timescale:%uD, duration:%uL, time:%.3fs", | |
1416 timescale, duration, (double) duration / timescale); | |
1417 | |
1418 duration -= (uint64_t) mp4->start * timescale / 1000; | |
1419 | |
1420 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1421 "mdhd new duration:%uL, time:%.3fs", | |
1422 duration, (double) duration / timescale); | |
1423 | |
1424 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1425 | |
1426 trak = ngx_mp4_last_trak(mp4); | |
1427 trak->mdhd_size = atom_size; | |
1428 trak->timescale = timescale; | |
1429 | |
1430 ngx_mp4_set_32value(mdhd_atom->size, atom_size); | |
1431 | |
1432 if (mdhd_atom->version[0] == 0) { | |
1433 ngx_mp4_set_32value(mdhd_atom->duration, duration); | |
1434 | |
1435 } else { | |
1436 ngx_mp4_set_64value(mdhd64_atom->duration, duration); | |
1437 } | |
1438 | |
1439 atom = &trak->mdhd_atom_buf; | |
1440 atom->temporary = 1; | |
1441 atom->pos = atom_header; | |
1442 atom->last = atom_header + atom_size; | |
1443 | |
1444 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom; | |
1445 | |
1446 ngx_mp4_atom_next(mp4, atom_data_size); | |
1447 | |
1448 return NGX_OK; | |
1449 } | |
1450 | |
1451 | |
1452 static ngx_int_t | |
1453 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1454 { | |
1455 u_char *atom_header; | |
1456 size_t atom_size; | |
1457 ngx_buf_t *atom; | |
1458 ngx_http_mp4_trak_t *trak; | |
1459 | |
1460 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom"); | |
1461 | |
1462 atom_header = ngx_mp4_atom_header(mp4); | |
1463 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1464 ngx_mp4_set_32value(atom_header, atom_size); | |
1465 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r'); | |
1466 | |
1467 trak = ngx_mp4_last_trak(mp4); | |
1468 | |
1469 atom = &trak->hdlr_atom_buf; | |
1470 atom->temporary = 1; | |
1471 atom->pos = atom_header; | |
1472 atom->last = atom_header + atom_size; | |
1473 | |
1474 trak->hdlr_size = atom_size; | |
1475 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom; | |
1476 | |
1477 ngx_mp4_atom_next(mp4, atom_data_size); | |
1478 | |
1479 return NGX_OK; | |
1480 } | |
1481 | |
1482 | |
1483 static ngx_int_t | |
1484 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1485 { | |
1486 u_char *atom_header; | |
1487 ngx_buf_t *atom; | |
1488 ngx_http_mp4_trak_t *trak; | |
1489 | |
1490 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom"); | |
1491 | |
1492 atom_header = ngx_mp4_atom_header(mp4); | |
1493 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f'); | |
1494 | |
1495 trak = ngx_mp4_last_trak(mp4); | |
1496 | |
1497 atom = &trak->minf_atom_buf; | |
1498 atom->temporary = 1; | |
1499 atom->pos = atom_header; | |
1500 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); | |
1501 | |
1502 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom; | |
1503 | |
1504 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size); | |
1505 } | |
1506 | |
1507 | |
1508 static void | |
1509 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4, | |
1510 ngx_http_mp4_trak_t *trak) | |
1511 { | |
1512 ngx_buf_t *atom; | |
1513 | |
1514 trak->size += sizeof(ngx_mp4_atom_header_t) | |
1515 + trak->vmhd_size | |
1516 + trak->smhd_size | |
1517 + trak->dinf_size; | |
1518 atom = &trak->minf_atom_buf; | |
1519 ngx_mp4_set_32value(atom->pos, trak->size); | |
1520 } | |
1521 | |
1522 | |
1523 static ngx_int_t | |
1524 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1525 { | |
1526 u_char *atom_header; | |
1527 size_t atom_size; | |
1528 ngx_buf_t *atom; | |
1529 ngx_http_mp4_trak_t *trak; | |
1530 | |
1531 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom"); | |
1532 | |
1533 atom_header = ngx_mp4_atom_header(mp4); | |
1534 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1535 ngx_mp4_set_32value(atom_header, atom_size); | |
1536 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd'); | |
1537 | |
1538 trak = ngx_mp4_last_trak(mp4); | |
1539 | |
1540 atom = &trak->vmhd_atom_buf; | |
1541 atom->temporary = 1; | |
1542 atom->pos = atom_header; | |
1543 atom->last = atom_header + atom_size; | |
1544 | |
1545 trak->vmhd_size += atom_size; | |
1546 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom; | |
1547 | |
1548 ngx_mp4_atom_next(mp4, atom_data_size); | |
1549 | |
1550 return NGX_OK; | |
1551 } | |
1552 | |
1553 | |
1554 static ngx_int_t | |
1555 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1556 { | |
1557 u_char *atom_header; | |
1558 size_t atom_size; | |
1559 ngx_buf_t *atom; | |
1560 ngx_http_mp4_trak_t *trak; | |
1561 | |
1562 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom"); | |
1563 | |
1564 atom_header = ngx_mp4_atom_header(mp4); | |
1565 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1566 ngx_mp4_set_32value(atom_header, atom_size); | |
1567 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd'); | |
1568 | |
1569 trak = ngx_mp4_last_trak(mp4); | |
1570 | |
1571 atom = &trak->smhd_atom_buf; | |
1572 atom->temporary = 1; | |
1573 atom->pos = atom_header; | |
1574 atom->last = atom_header + atom_size; | |
1575 | |
1576 trak->vmhd_size += atom_size; | |
1577 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom; | |
1578 | |
1579 ngx_mp4_atom_next(mp4, atom_data_size); | |
1580 | |
1581 return NGX_OK; | |
1582 } | |
1583 | |
1584 | |
1585 static ngx_int_t | |
1586 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1587 { | |
1588 u_char *atom_header; | |
1589 size_t atom_size; | |
1590 ngx_buf_t *atom; | |
1591 ngx_http_mp4_trak_t *trak; | |
1592 | |
1593 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom"); | |
1594 | |
1595 atom_header = ngx_mp4_atom_header(mp4); | |
1596 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1597 ngx_mp4_set_32value(atom_header, atom_size); | |
1598 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f'); | |
1599 | |
1600 trak = ngx_mp4_last_trak(mp4); | |
1601 | |
1602 atom = &trak->dinf_atom_buf; | |
1603 atom->temporary = 1; | |
1604 atom->pos = atom_header; | |
1605 atom->last = atom_header + atom_size; | |
1606 | |
1607 trak->dinf_size += atom_size; | |
1608 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom; | |
1609 | |
1610 ngx_mp4_atom_next(mp4, atom_data_size); | |
1611 | |
1612 return NGX_OK; | |
1613 } | |
1614 | |
1615 | |
1616 static ngx_int_t | |
1617 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1618 { | |
1619 u_char *atom_header; | |
1620 ngx_buf_t *atom; | |
1621 ngx_http_mp4_trak_t *trak; | |
1622 | |
1623 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom"); | |
1624 | |
1625 atom_header = ngx_mp4_atom_header(mp4); | |
1626 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l'); | |
1627 | |
1628 trak = ngx_mp4_last_trak(mp4); | |
1629 | |
1630 atom = &trak->stbl_atom_buf; | |
1631 atom->temporary = 1; | |
1632 atom->pos = atom_header; | |
1633 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); | |
1634 | |
1635 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom; | |
1636 | |
1637 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size); | |
1638 } | |
1639 | |
1640 | |
1641 static void | |
1642 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4, | |
1643 ngx_http_mp4_trak_t *trak) | |
1644 { | |
1645 ngx_buf_t *atom; | |
1646 | |
1647 trak->size += sizeof(ngx_mp4_atom_header_t); | |
1648 atom = &trak->stbl_atom_buf; | |
1649 ngx_mp4_set_32value(atom->pos, trak->size); | |
1650 } | |
1651 | |
1652 | |
1653 typedef struct { | |
1654 u_char size[4]; | |
1655 u_char name[4]; | |
1656 u_char version[1]; | |
1657 u_char flags[3]; | |
1658 u_char entries[4]; | |
1659 } ngx_mp4_stsd_atom_t; | |
1660 | |
1661 | |
1662 static ngx_int_t | |
1663 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1664 { | |
1665 u_char *atom_header, *atom_table; | |
1666 size_t atom_size; | |
1667 ngx_buf_t *atom; | |
1668 ngx_mp4_stsd_atom_t *stsd_atom; | |
1669 ngx_http_mp4_trak_t *trak; | |
1670 | |
1671 /* sample description atom */ | |
1672 | |
1673 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom"); | |
1674 | |
1675 atom_header = ngx_mp4_atom_header(mp4); | |
1676 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header; | |
1677 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
1678 atom_table = atom_header + atom_size; | |
1679 ngx_mp4_set_32value(stsd_atom->size, atom_size); | |
1680 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd'); | |
1681 | |
1682 #if (NGX_DEBUG) | |
1683 { | |
1684 uint32_t entries; | |
1685 | |
1686 entries = ngx_mp4_get_32value(stsd_atom->entries); | |
1687 | |
1688 if (entries) { | |
1689 /* codecs of interest: avc1 (H.264), mp4a (MPEG-4 audio) */ | |
1690 | |
1691 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1692 "stsd entries:%ui, codec:%*s", | |
1693 entries, 4, atom_table); | |
1694 } | |
1695 } | |
1696 #endif | |
1697 | |
1698 trak = ngx_mp4_last_trak(mp4); | |
1699 | |
1700 atom = &trak->stsd_atom_buf; | |
1701 atom->temporary = 1; | |
1702 atom->pos = atom_header; | |
1703 atom->last = atom_table; | |
1704 | |
1705 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom; | |
1706 trak->size += atom_size; | |
1707 | |
1708 ngx_mp4_atom_next(mp4, atom_data_size); | |
1709 | |
1710 return NGX_OK; | |
1711 } | |
1712 | |
1713 | |
1714 typedef struct { | |
1715 u_char size[4]; | |
1716 u_char name[4]; | |
1717 u_char version[1]; | |
1718 u_char flags[3]; | |
1719 u_char entries[4]; | |
1720 } ngx_mp4_stts_atom_t; | |
1721 | |
1722 typedef struct { | |
1723 u_char count[4]; | |
1724 u_char duration[4]; | |
1725 } ngx_mp4_stts_entry_t; | |
1726 | |
1727 | |
1728 static ngx_int_t | |
1729 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1730 { | |
1731 u_char *atom_header, *atom_table, *atom_end; | |
1732 uint32_t entries; | |
1733 ngx_buf_t *atom, *data; | |
1734 ngx_mp4_stts_atom_t *stts_atom; | |
1735 ngx_http_mp4_trak_t *trak; | |
1736 | |
1737 /* time-to-sample atom */ | |
1738 | |
1739 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom"); | |
1740 | |
1741 atom_header = ngx_mp4_atom_header(mp4); | |
1742 stts_atom = (ngx_mp4_stts_atom_t *) atom_header; | |
1743 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's'); | |
1744 | |
1745 entries = ngx_mp4_get_32value(stts_atom->entries); | |
1746 | |
1747 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1748 "mp4 time-to-sample entries:%ui", entries); | |
1749 | |
1750 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t); | |
1751 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t); | |
1752 | |
1753 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) { | |
1754 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1755 "\"%s\" mp4 stts atom too large", | |
1756 mp4->file.name.data); | |
1757 return NGX_ERROR; | |
1758 } | |
1759 | |
1760 trak = ngx_mp4_last_trak(mp4); | |
1761 trak->time_to_sample_entries = entries; | |
1762 | |
1763 atom = &trak->stts_atom_buf; | |
1764 atom->temporary = 1; | |
1765 atom->pos = atom_header; | |
1766 atom->last = atom_table; | |
1767 | |
1768 data = &trak->stts_data_buf; | |
1769 data->temporary = 1; | |
1770 data->pos = atom_table; | |
1771 data->last = atom_end; | |
1772 | |
1773 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom; | |
1774 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data; | |
1775 | |
1776 ngx_mp4_atom_next(mp4, atom_data_size); | |
1777 | |
1778 return NGX_OK; | |
1779 } | |
1780 | |
1781 | |
1782 static ngx_int_t | |
1783 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4, | |
1784 ngx_http_mp4_trak_t *trak) | |
1785 { | |
1786 size_t atom_size; | |
1787 uint32_t entries, count, duration; | |
1788 uint64_t start_time; | |
1789 ngx_buf_t *atom, *data; | |
1790 ngx_uint_t start_sample; | |
1791 ngx_mp4_stts_atom_t *stts_atom; | |
1792 ngx_mp4_stts_entry_t *entry, *end; | |
1793 | |
1794 /* | |
1795 * mdia.minf.stbl.stts updating requires trak->timescale | |
1796 * from mdia.mdhd atom which may reside after mdia.minf | |
1797 */ | |
1798 | |
1799 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1800 "mp4 stts atom update"); | |
1801 | |
1802 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf; | |
1803 | |
1804 if (data == NULL) { | |
1805 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1806 "no mp4 stts atoms were found in \"%s\"", | |
1807 mp4->file.name.data); | |
1808 return NGX_ERROR; | |
1809 } | |
1810 | |
1811 entries = trak->time_to_sample_entries; | |
1812 start_time = mp4->start * trak->timescale / 1000; | |
1813 | |
1814 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1815 "time-to-sample start_time:%ui", start_time); | |
1816 | |
1817 start_sample = 0; | |
1818 entry = (ngx_mp4_stts_entry_t *) data->pos; | |
1819 end = (ngx_mp4_stts_entry_t *) data->last; | |
1820 | |
1821 while (entry < end) { | |
1822 count = ngx_mp4_get_32value(entry->count); | |
1823 duration = ngx_mp4_get_32value(entry->duration); | |
1824 | |
1825 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1826 "count:%uD, duration:%uD", count, duration); | |
1827 | |
1828 if (start_time < count * duration) { | |
1829 start_sample += (ngx_uint_t) (start_time / duration); | |
1830 count -= start_sample; | |
1831 ngx_mp4_set_32value(entry->count, count); | |
1832 goto found; | |
1833 } | |
1834 | |
1835 start_sample += count; | |
1836 start_time -= count * duration; | |
1837 entries--; | |
1838 entry++; | |
1839 } | |
1840 | |
1841 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1842 "start time is out mp4 stts samples in \"%\"", | |
1843 mp4->file.name.data); | |
1844 | |
1845 return NGX_ERROR; | |
1846 | |
1847 found: | |
1848 | |
1849 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1850 "start_sample:%ui, new count:%uD", start_sample, count); | |
1851 | |
1852 trak->start_sample = start_sample; | |
1853 | |
1854 data->pos = (u_char *) entry; | |
1855 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos); | |
1856 trak->size += atom_size; | |
1857 | |
1858 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf; | |
1859 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos; | |
1860 ngx_mp4_set_32value(stts_atom->size, atom_size); | |
1861 ngx_mp4_set_32value(stts_atom->entries, entries); | |
1862 | |
1863 return NGX_OK; | |
1864 } | |
1865 | |
1866 | |
1867 typedef struct { | |
1868 u_char size[4]; | |
1869 u_char name[4]; | |
1870 u_char version[1]; | |
1871 u_char flags[3]; | |
1872 u_char entries[4]; | |
1873 } ngx_http_mp4_stss_atom_t; | |
1874 | |
1875 | |
1876 static ngx_int_t | |
1877 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
1878 { | |
1879 u_char *atom_header, *atom_table, *atom_end; | |
1880 uint32_t entries; | |
1881 ngx_buf_t *atom, *data; | |
1882 ngx_http_mp4_trak_t *trak; | |
1883 ngx_http_mp4_stss_atom_t *stss_atom; | |
1884 | |
1885 /* sync samples atom */ | |
1886 | |
1887 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom"); | |
1888 | |
1889 atom_header = ngx_mp4_atom_header(mp4); | |
1890 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header; | |
1891 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's'); | |
1892 | |
1893 entries = ngx_mp4_get_32value(stss_atom->entries); | |
1894 | |
1895 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1896 "sync sample entries:%ui", entries); | |
1897 | |
1898 trak = ngx_mp4_last_trak(mp4); | |
1899 trak->sync_samples_entries = entries; | |
1900 | |
1901 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t); | |
1902 | |
1903 atom = &trak->stss_atom_buf; | |
1904 atom->temporary = 1; | |
1905 atom->pos = atom_header; | |
1906 atom->last = atom_table; | |
1907 | |
1908 atom_end = atom_table + entries * sizeof(uint32_t); | |
1909 | |
1910 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) { | |
1911 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1912 "\"%s\" mp4 stss atom too large", mp4->file.name.data); | |
1913 return NGX_ERROR; | |
1914 } | |
1915 | |
1916 data = &trak->stss_data_buf; | |
1917 data->temporary = 1; | |
1918 data->pos = atom_table; | |
1919 data->last = atom_end; | |
1920 | |
1921 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom; | |
1922 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data; | |
1923 | |
1924 ngx_mp4_atom_next(mp4, atom_data_size); | |
1925 | |
1926 return NGX_OK; | |
1927 } | |
1928 | |
1929 | |
1930 static ngx_int_t | |
1931 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4, | |
1932 ngx_http_mp4_trak_t *trak) | |
1933 { | |
1934 size_t atom_size; | |
1935 uint32_t entries, sample, start_sample, *entry, *end; | |
1936 ngx_buf_t *atom, *data; | |
1937 ngx_http_mp4_stss_atom_t *stss_atom; | |
1938 | |
1939 /* | |
1940 * mdia.minf.stbl.stss updating requires trak->start_sample | |
1941 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd | |
1942 * atom which may reside after mdia.minf | |
1943 */ | |
1944 | |
1945 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1946 "mp4 stss atom update"); | |
1947 | |
1948 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf; | |
1949 | |
1950 if (data == NULL) { | |
1951 return NGX_OK; | |
1952 } | |
1953 | |
1954 /* sync samples starts from 1 */ | |
1955 start_sample = trak->start_sample + 1; | |
1956 entries = trak->sync_samples_entries; | |
1957 | |
1958 entry = (uint32_t *) data->pos; | |
1959 end = (uint32_t *) data->last; | |
1960 | |
1961 while (entry < end) { | |
1962 sample = ngx_mp4_get_32value(entry); | |
1963 | |
1964 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
1965 "start:%uD, sync:%uD", start_sample, sample); | |
1966 | |
1967 if (sample >= start_sample) { | |
1968 goto found; | |
1969 } | |
1970 | |
1971 entries--; | |
1972 entry++; | |
1973 } | |
1974 | |
1975 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
1976 "start sample is out of mp4 stss atom in \"%s\"", | |
1977 mp4->file.name.data); | |
1978 | |
1979 return NGX_ERROR; | |
1980 | |
1981 found: | |
1982 | |
1983 data->pos = (u_char *) entry; | |
1984 | |
1985 start_sample = trak->start_sample; | |
1986 | |
1987 while (entry < end) { | |
1988 sample = ngx_mp4_get_32value(entry); | |
1989 sample -= start_sample; | |
1990 ngx_mp4_set_32value(entry, sample); | |
1991 entry++; | |
1992 } | |
1993 | |
1994 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos); | |
1995 trak->size += atom_size; | |
1996 | |
1997 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf; | |
1998 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos; | |
1999 | |
2000 ngx_mp4_set_32value(stss_atom->size, atom_size); | |
2001 ngx_mp4_set_32value(stss_atom->entries, entries); | |
2002 | |
2003 return NGX_OK; | |
2004 } | |
2005 | |
2006 | |
2007 typedef struct { | |
2008 u_char size[4]; | |
2009 u_char name[4]; | |
2010 u_char version[1]; | |
2011 u_char flags[3]; | |
2012 u_char entries[4]; | |
2013 } ngx_mp4_ctts_atom_t; | |
2014 | |
2015 typedef struct { | |
2016 u_char count[4]; | |
2017 u_char offset[4]; | |
2018 } ngx_mp4_ctts_entry_t; | |
2019 | |
2020 | |
2021 static ngx_int_t | |
2022 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
2023 { | |
2024 u_char *atom_header, *atom_table, *atom_end; | |
2025 uint32_t entries; | |
2026 ngx_buf_t *atom, *data; | |
2027 ngx_mp4_ctts_atom_t *ctts_atom; | |
2028 ngx_http_mp4_trak_t *trak; | |
2029 | |
2030 /* composition offsets atom */ | |
2031 | |
2032 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom"); | |
2033 | |
2034 atom_header = ngx_mp4_atom_header(mp4); | |
2035 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header; | |
2036 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's'); | |
2037 | |
2038 entries = ngx_mp4_get_32value(ctts_atom->entries); | |
2039 | |
2040 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2041 "composition offset entries:%ui", entries); | |
2042 | |
2043 trak = ngx_mp4_last_trak(mp4); | |
2044 trak->composition_offset_entries = entries; | |
2045 | |
2046 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t); | |
2047 | |
2048 atom = &trak->ctts_atom_buf; | |
2049 atom->temporary = 1; | |
2050 atom->pos = atom_header; | |
2051 atom->last = atom_table; | |
2052 | |
2053 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t); | |
2054 | |
2055 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) { | |
2056 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2057 "\"%s\" mp4 ctts atom too large", mp4->file.name.data); | |
2058 return NGX_ERROR; | |
2059 } | |
2060 | |
2061 data = &trak->ctts_data_buf; | |
2062 data->temporary = 1; | |
2063 data->pos = atom_table; | |
2064 data->last = atom_end; | |
2065 | |
2066 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom; | |
2067 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data; | |
2068 | |
2069 ngx_mp4_atom_next(mp4, atom_data_size); | |
2070 | |
2071 return NGX_OK; | |
2072 } | |
2073 | |
2074 | |
2075 static void | |
2076 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4, | |
2077 ngx_http_mp4_trak_t *trak) | |
2078 { | |
2079 size_t atom_size; | |
2080 uint32_t entries, count, start_sample; | |
2081 ngx_buf_t *atom, *data; | |
2082 ngx_mp4_ctts_atom_t *ctts_atom; | |
2083 ngx_mp4_ctts_entry_t *entry, *end; | |
2084 | |
2085 /* | |
2086 * mdia.minf.stbl.ctts updating requires trak->start_sample | |
2087 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd | |
2088 * atom which may reside after mdia.minf | |
2089 */ | |
2090 | |
2091 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2092 "mp4 ctts atom update"); | |
2093 | |
2094 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf; | |
2095 | |
2096 if (data == NULL) { | |
2097 return; | |
2098 } | |
2099 | |
2100 /* sync samples starts from 1 */ | |
2101 start_sample = trak->start_sample + 1; | |
2102 entries = trak->composition_offset_entries; | |
2103 entry = (ngx_mp4_ctts_entry_t *) data->pos; | |
2104 end = (ngx_mp4_ctts_entry_t *) data->last; | |
2105 | |
2106 while (entry < end) { | |
2107 count = ngx_mp4_get_32value(entry->count); | |
2108 | |
2109 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2110 "start:%uD, count:%uD, offset:%uD", | |
2111 start_sample, count, ngx_mp4_get_32value(entry->offset)); | |
2112 | |
2113 if (start_sample <= count) { | |
2114 count -= (start_sample - 1); | |
2115 ngx_mp4_set_32value(entry->count, count); | |
2116 goto found; | |
2117 } | |
2118 | |
2119 start_sample -= count; | |
2120 entries--; | |
2121 entry++; | |
2122 } | |
2123 | |
2124 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL; | |
2125 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL; | |
2126 | |
2127 return; | |
2128 | |
2129 found: | |
2130 | |
2131 data->pos = (u_char *) entry; | |
2132 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos); | |
2133 trak->size += atom_size; | |
2134 | |
2135 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf; | |
2136 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos; | |
2137 | |
2138 ngx_mp4_set_32value(ctts_atom->size, atom_size); | |
2139 ngx_mp4_set_32value(ctts_atom->entries, entries); | |
2140 | |
2141 return; | |
2142 } | |
2143 | |
2144 | |
2145 typedef struct { | |
2146 u_char size[4]; | |
2147 u_char name[4]; | |
2148 u_char version[1]; | |
2149 u_char flags[3]; | |
2150 u_char entries[4]; | |
2151 } ngx_mp4_stsc_atom_t; | |
2152 | |
2153 typedef struct { | |
2154 u_char chunk[4]; | |
2155 u_char samples[4]; | |
2156 u_char id[4]; | |
2157 } ngx_mp4_stsc_entry_t; | |
2158 | |
2159 | |
2160 static ngx_int_t | |
2161 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
2162 { | |
2163 u_char *atom_header, *atom_table, *atom_end; | |
2164 uint32_t entries; | |
2165 ngx_buf_t *atom, *data; | |
2166 ngx_mp4_stsc_atom_t *stsc_atom; | |
2167 ngx_http_mp4_trak_t *trak; | |
2168 | |
2169 /* sample-to-chunk atom */ | |
2170 | |
2171 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom"); | |
2172 | |
2173 atom_header = ngx_mp4_atom_header(mp4); | |
2174 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header; | |
2175 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c'); | |
2176 | |
2177 entries = ngx_mp4_get_32value(stsc_atom->entries); | |
2178 | |
2179 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2180 "sample-to-chunk entries:%ui", entries); | |
2181 | |
2182 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t); | |
2183 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t); | |
2184 | |
2185 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) { | |
2186 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2187 "\"%s\" mp4 stsc atom too large", | |
2188 mp4->file.name.data); | |
2189 return NGX_ERROR; | |
2190 } | |
2191 | |
2192 trak = ngx_mp4_last_trak(mp4); | |
2193 trak->sample_to_chunk_entries = entries; | |
2194 | |
2195 atom = &trak->stsc_atom_buf; | |
2196 atom->temporary = 1; | |
2197 atom->pos = atom_header; | |
2198 atom->last = atom_table; | |
2199 | |
2200 data = &trak->stsc_data_buf; | |
2201 data->temporary = 1; | |
2202 data->pos = atom_table; | |
2203 data->last = atom_end; | |
2204 | |
2205 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom; | |
2206 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data; | |
2207 | |
2208 ngx_mp4_atom_next(mp4, atom_data_size); | |
2209 | |
2210 return NGX_OK; | |
2211 } | |
2212 | |
2213 | |
2214 static ngx_int_t | |
2215 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4, | |
2216 ngx_http_mp4_trak_t *trak) | |
2217 { | |
2218 size_t atom_size; | |
2219 uint32_t entries, chunk, samples, prev_chunk, prev_samples; | |
2220 ngx_buf_t *atom, *data; | |
2221 ngx_mp4_stsc_atom_t *stsc_atom; | |
2222 ngx_mp4_stsc_entry_t *entry, *end; | |
2223 | |
2224 /* | |
2225 * mdia.minf.stbl.stsc updating requires trak->start_sample | |
2226 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd | |
2227 * atom which may reside after mdia.minf | |
2228 */ | |
2229 | |
2230 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2231 "mp4 stsc atom update"); | |
2232 | |
2233 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf; | |
2234 | |
2235 if (data == NULL) { | |
2236 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2237 "no mp4 stsc atoms were found in \"%s\"", | |
2238 mp4->file.name.data); | |
2239 return NGX_ERROR; | |
2240 } | |
2241 | |
2242 chunk = 0; | |
2243 samples = 1; | |
2244 prev_chunk = 0; | |
2245 prev_samples = 0; | |
2246 | |
2247 entries = trak->sample_to_chunk_entries; | |
2248 entry = (ngx_mp4_stsc_entry_t *) data->pos; | |
2249 end = (ngx_mp4_stsc_entry_t *) data->last; | |
2250 | |
2251 while (entry < end) { | |
2252 | |
2253 chunk = ngx_mp4_get_32value(entry->chunk); | |
2254 samples = ngx_mp4_get_32value(entry->samples); | |
2255 | |
2256 trak->start_sample -= (chunk - prev_chunk) * prev_samples; | |
2257 | |
2258 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2259 "chunk:%ui, samples:%ui, id:%ui", | |
2260 chunk, samples, ngx_mp4_get_32value(entry->id)); | |
2261 | |
2262 if (trak->start_sample < samples) { | |
2263 goto found; | |
2264 } | |
2265 | |
2266 prev_chunk = chunk; | |
2267 prev_samples = samples; | |
2268 entries--; | |
2269 entry++; | |
2270 } | |
2271 | |
2272 entries++; | |
2273 entry--; | |
2274 | |
2275 found: | |
2276 | |
2277 data->pos = (u_char *) entry; | |
2278 | |
2279 chunk = trak->start_sample / samples; | |
2280 trak->start_chunk = chunk; | |
2281 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos); | |
2282 trak->size += atom_size; | |
2283 | |
2284 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2285 "start chunk:%ui", chunk); | |
2286 | |
2287 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf; | |
2288 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos; | |
2289 | |
2290 ngx_mp4_set_32value(stsc_atom->size, atom_size); | |
2291 ngx_mp4_set_32value(stsc_atom->entries, entries); | |
2292 | |
2293 return NGX_OK; | |
2294 } | |
2295 | |
2296 | |
2297 typedef struct { | |
2298 u_char size[4]; | |
2299 u_char name[4]; | |
2300 u_char version[1]; | |
2301 u_char flags[3]; | |
2302 u_char uniform_size[4]; | |
2303 u_char entries[4]; | |
2304 } ngx_mp4_stsz_atom_t; | |
2305 | |
2306 | |
2307 static ngx_int_t | |
2308 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
2309 { | |
2310 u_char *atom_header, *atom_table, *atom_end; | |
2311 size_t atom_size; | |
2312 uint32_t entries, size; | |
2313 ngx_buf_t *atom, *data; | |
2314 ngx_mp4_stsz_atom_t *stsz_atom; | |
2315 ngx_http_mp4_trak_t *trak; | |
2316 | |
2317 /* sample sizes atom */ | |
2318 | |
2319 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom"); | |
2320 | |
2321 atom_header = ngx_mp4_atom_header(mp4); | |
2322 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header; | |
2323 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z'); | |
2324 | |
2325 size = ngx_mp4_get_32value(stsz_atom->uniform_size); | |
2326 entries = ngx_mp4_get_32value(stsz_atom->entries); | |
2327 | |
2328 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2329 "sample uniform size:%uD, entries:%uD", size, entries); | |
2330 | |
2331 trak = ngx_mp4_last_trak(mp4); | |
2332 trak->sample_sizes_entries = entries; | |
2333 | |
2334 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t); | |
2335 | |
2336 atom = &trak->stsz_atom_buf; | |
2337 atom->temporary = 1; | |
2338 atom->pos = atom_header; | |
2339 atom->last = atom_table; | |
2340 | |
2341 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom; | |
2342 | |
2343 if (size == 0) { | |
2344 atom_end = atom_table + entries * sizeof(uint32_t); | |
2345 | |
2346 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) { | |
2347 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2348 "\"%s\" mp4 stsz atom too large", | |
2349 mp4->file.name.data); | |
2350 return NGX_ERROR; | |
2351 } | |
2352 | |
2353 data = &trak->stsz_data_buf; | |
2354 data->temporary = 1; | |
2355 data->pos = atom_table; | |
2356 data->last = atom_end; | |
2357 | |
2358 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data; | |
2359 | |
2360 } else { | |
2361 /* if size != 0 then all samples are the same size */ | |
2362 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; | |
2363 ngx_mp4_set_32value(atom_header, atom_size); | |
2364 trak->size += atom_size; | |
2365 } | |
2366 | |
2367 ngx_mp4_atom_next(mp4, atom_data_size); | |
2368 | |
2369 return NGX_OK; | |
2370 } | |
2371 | |
2372 | |
2373 static void | |
2374 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4, | |
2375 ngx_http_mp4_trak_t *trak) | |
2376 { | |
2377 size_t atom_size; | |
2378 ngx_buf_t *atom, *data; | |
2379 ngx_mp4_stsz_atom_t *stsz_atom; | |
2380 | |
2381 /* | |
2382 * mdia.minf.stbl.stsz updating requires trak->start_sample | |
2383 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd | |
2384 * atom which may reside after mdia.minf | |
2385 */ | |
2386 | |
2387 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2388 "mp4 stsz atom update"); | |
2389 | |
2390 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf; | |
2391 | |
2392 if (data) { | |
2393 data->pos += trak->start_sample * sizeof(uint32_t); | |
2394 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos); | |
2395 trak->size += atom_size; | |
2396 | |
2397 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf; | |
2398 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos; | |
2399 | |
2400 ngx_mp4_set_32value(stsz_atom->size, atom_size); | |
2401 ngx_mp4_set_32value(stsz_atom->entries, | |
2402 trak->sample_sizes_entries - trak->start_sample); | |
2403 } | |
2404 } | |
2405 | |
2406 | |
2407 typedef struct { | |
2408 u_char size[4]; | |
2409 u_char name[4]; | |
2410 u_char version[1]; | |
2411 u_char flags[3]; | |
2412 u_char entries[4]; | |
2413 } ngx_mp4_stco_atom_t; | |
2414 | |
2415 | |
2416 static ngx_int_t | |
2417 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) | |
2418 { | |
2419 u_char *atom_header, *atom_table, *atom_end; | |
2420 uint32_t entries; | |
2421 ngx_buf_t *atom, *data; | |
2422 ngx_mp4_stco_atom_t *stco_atom; | |
2423 ngx_http_mp4_trak_t *trak; | |
2424 | |
2425 /* chunk offsets atom */ | |
2426 | |
2427 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom"); | |
2428 | |
2429 atom_header = ngx_mp4_atom_header(mp4); | |
2430 stco_atom = (ngx_mp4_stco_atom_t *) atom_header; | |
2431 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o'); | |
2432 | |
2433 entries = ngx_mp4_get_32value(stco_atom->entries); | |
2434 | |
2435 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries); | |
2436 | |
2437 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t); | |
2438 atom_end = atom_table + entries * sizeof(uint32_t); | |
2439 | |
2440 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) { | |
2441 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2442 "\"%s\" mp4 stco atom too large", mp4->file.name.data); | |
2443 return NGX_ERROR; | |
2444 } | |
2445 | |
2446 trak = ngx_mp4_last_trak(mp4); | |
2447 trak->chunks = entries; | |
2448 | |
2449 atom = &trak->tsco_atom_buf; | |
2450 atom->temporary = 1; | |
2451 atom->pos = atom_header; | |
2452 atom->last = atom_table; | |
2453 | |
2454 data = &trak->tsco_data_buf; | |
2455 data->temporary = 1; | |
2456 data->pos = atom_table; | |
2457 data->last = atom_end; | |
2458 | |
2459 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom; | |
2460 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data; | |
2461 | |
2462 ngx_mp4_atom_next(mp4, atom_data_size); | |
2463 | |
2464 return NGX_OK; | |
2465 } | |
2466 | |
2467 | |
2468 static ngx_int_t | |
2469 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4, | |
2470 ngx_http_mp4_trak_t *trak) | |
2471 { | |
2472 size_t atom_size; | |
2473 uint32_t start_chunk; | |
2474 ngx_buf_t *atom, *data; | |
2475 ngx_mp4_stco_atom_t *stco_atom; | |
2476 | |
2477 /* | |
2478 * mdia.minf.stbl.stco updating requires trak->start_chunk | |
2479 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd | |
2480 * atom which may reside after mdia.minf | |
2481 */ | |
2482 | |
2483 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2484 "mp4 stco atom update"); | |
2485 | |
2486 if (trak->start_chunk > trak->chunks) { | |
2487 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2488 "start time is out mp4 stsc chunks in \"%\"", | |
2489 mp4->file.name.data); | |
2490 return NGX_ERROR; | |
2491 } | |
2492 | |
2493 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf; | |
2494 | |
2495 if (data == NULL) { | |
2496 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, | |
2497 "no mp4 stco atoms were found in \"%s\"", | |
2498 mp4->file.name.data); | |
2499 return NGX_ERROR; | |
2500 } | |
2501 | |
2502 start_chunk = trak->start_chunk; | |
2503 | |
2504 data->pos += start_chunk * sizeof(uint32_t); | |
2505 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos); | |
2506 trak->size += atom_size; | |
2507 | |
2508 trak->start_offset = ngx_mp4_get_32value(data->pos); | |
2509 | |
2510 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2511 "start chunk offset:%uD", trak->start_offset); | |
2512 | |
2513 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf; | |
2514 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos; | |
2515 | |
2516 ngx_mp4_set_32value(stco_atom->size, atom_size); | |
2517 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - start_chunk); | |
2518 | |
2519 return NGX_OK; | |
2520 } | |
2521 | |
2522 | |
2523 static void | |
2524 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4, | |
2525 ngx_http_mp4_trak_t *trak, int32_t adjustment) | |
2526 { | |
2527 uint32_t offset, *entry, *end; | |
2528 ngx_buf_t *data; | |
2529 | |
2530 /* | |
2531 * moov.trak.mdia.minf.stbl.stco adjustment requires | |
2532 * minimal start offset of all traks and new moov atom size | |
2533 */ | |
2534 | |
2535 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, | |
2536 "mp4 stco atom adjustment"); | |
2537 | |
2538 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf; | |
2539 entry = (uint32_t *) data->pos; | |
2540 end = (uint32_t *) data->last; | |
2541 | |
2542 while (entry < end) { | |
2543 offset = ngx_mp4_get_32value(entry); | |
2544 offset += adjustment; | |
2545 ngx_mp4_set_32value(entry, offset); | |
2546 entry++; | |
2547 } | |
2548 } | |
2549 | |
2550 | |
2551 static char * | |
2552 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
2553 { | |
2554 ngx_http_core_loc_conf_t *clcf; | |
2555 | |
2556 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
2557 clcf->handler = ngx_http_mp4_handler; | |
2558 | |
2559 return NGX_CONF_OK; | |
2560 } | |
2561 | |
2562 | |
2563 static void * | |
2564 ngx_http_mp4_create_conf(ngx_conf_t *cf) | |
2565 { | |
2566 ngx_http_mp4_conf_t *conf; | |
2567 | |
2568 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t)); | |
2569 if (conf == NULL) { | |
2570 return NULL; | |
2571 } | |
2572 | |
2573 conf->buffer_size = NGX_CONF_UNSET_SIZE; | |
2574 conf->max_moov_size = NGX_CONF_UNSET_SIZE; | |
2575 | |
2576 return conf; | |
2577 } | |
2578 | |
2579 | |
2580 static char * | |
2581 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
2582 { | |
2583 ngx_http_mp4_conf_t *prev = parent; | |
2584 ngx_http_mp4_conf_t *conf = child; | |
2585 | |
2586 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024); | |
2587 ngx_conf_merge_size_value(conf->max_moov_size, prev->max_moov_size, | |
2588 10 * 1024 * 1024); | |
2589 | |
2590 return NGX_CONF_OK; | |
2591 } |