638
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
660
|
4 * Copyright (C) Nginx, Inc.
|
638
|
5 */
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_http.h>
|
|
10
|
|
11
|
|
12 #define NGX_HTTP_MP4_TRAK_ATOM 0
|
|
13 #define NGX_HTTP_MP4_TKHD_ATOM 1
|
|
14 #define NGX_HTTP_MP4_MDIA_ATOM 2
|
|
15 #define NGX_HTTP_MP4_MDHD_ATOM 3
|
|
16 #define NGX_HTTP_MP4_HDLR_ATOM 4
|
|
17 #define NGX_HTTP_MP4_MINF_ATOM 5
|
|
18 #define NGX_HTTP_MP4_VMHD_ATOM 6
|
|
19 #define NGX_HTTP_MP4_SMHD_ATOM 7
|
|
20 #define NGX_HTTP_MP4_DINF_ATOM 8
|
|
21 #define NGX_HTTP_MP4_STBL_ATOM 9
|
|
22 #define NGX_HTTP_MP4_STSD_ATOM 10
|
|
23 #define NGX_HTTP_MP4_STTS_ATOM 11
|
|
24 #define NGX_HTTP_MP4_STTS_DATA 12
|
|
25 #define NGX_HTTP_MP4_STSS_ATOM 13
|
|
26 #define NGX_HTTP_MP4_STSS_DATA 14
|
|
27 #define NGX_HTTP_MP4_CTTS_ATOM 15
|
|
28 #define NGX_HTTP_MP4_CTTS_DATA 16
|
|
29 #define NGX_HTTP_MP4_STSC_ATOM 17
|
|
30 #define NGX_HTTP_MP4_STSC_CHUNK 18
|
|
31 #define NGX_HTTP_MP4_STSC_DATA 19
|
|
32 #define NGX_HTTP_MP4_STSZ_ATOM 20
|
|
33 #define NGX_HTTP_MP4_STSZ_DATA 21
|
|
34 #define NGX_HTTP_MP4_STCO_ATOM 22
|
|
35 #define NGX_HTTP_MP4_STCO_DATA 23
|
640
|
36 #define NGX_HTTP_MP4_CO64_ATOM 24
|
|
37 #define NGX_HTTP_MP4_CO64_DATA 25
|
|
38
|
|
39 #define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_CO64_DATA
|
638
|
40
|
|
41
|
|
42 typedef struct {
|
|
43 size_t buffer_size;
|
|
44 size_t max_buffer_size;
|
|
45 } ngx_http_mp4_conf_t;
|
|
46
|
|
47
|
|
48 typedef struct {
|
|
49 u_char chunk[4];
|
|
50 u_char samples[4];
|
|
51 u_char id[4];
|
|
52 } ngx_mp4_stsc_entry_t;
|
|
53
|
|
54
|
|
55 typedef struct {
|
|
56 uint32_t timescale;
|
|
57 uint32_t time_to_sample_entries;
|
|
58 uint32_t sample_to_chunk_entries;
|
|
59 uint32_t sync_samples_entries;
|
|
60 uint32_t composition_offset_entries;
|
|
61 uint32_t sample_sizes_entries;
|
|
62 uint32_t chunks;
|
|
63
|
|
64 ngx_uint_t start_sample;
|
|
65 ngx_uint_t start_chunk;
|
|
66 ngx_uint_t chunk_samples;
|
640
|
67 uint64_t chunk_samples_size;
|
638
|
68 off_t start_offset;
|
|
69
|
|
70 size_t tkhd_size;
|
|
71 size_t mdhd_size;
|
|
72 size_t hdlr_size;
|
|
73 size_t vmhd_size;
|
|
74 size_t smhd_size;
|
|
75 size_t dinf_size;
|
|
76 size_t size;
|
|
77
|
|
78 ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1];
|
|
79
|
|
80 ngx_buf_t trak_atom_buf;
|
|
81 ngx_buf_t tkhd_atom_buf;
|
|
82 ngx_buf_t mdia_atom_buf;
|
|
83 ngx_buf_t mdhd_atom_buf;
|
|
84 ngx_buf_t hdlr_atom_buf;
|
|
85 ngx_buf_t minf_atom_buf;
|
|
86 ngx_buf_t vmhd_atom_buf;
|
|
87 ngx_buf_t smhd_atom_buf;
|
|
88 ngx_buf_t dinf_atom_buf;
|
|
89 ngx_buf_t stbl_atom_buf;
|
|
90 ngx_buf_t stsd_atom_buf;
|
|
91 ngx_buf_t stts_atom_buf;
|
|
92 ngx_buf_t stts_data_buf;
|
|
93 ngx_buf_t stss_atom_buf;
|
|
94 ngx_buf_t stss_data_buf;
|
|
95 ngx_buf_t ctts_atom_buf;
|
|
96 ngx_buf_t ctts_data_buf;
|
|
97 ngx_buf_t stsc_atom_buf;
|
|
98 ngx_buf_t stsc_chunk_buf;
|
|
99 ngx_buf_t stsc_data_buf;
|
|
100 ngx_buf_t stsz_atom_buf;
|
|
101 ngx_buf_t stsz_data_buf;
|
640
|
102 ngx_buf_t stco_atom_buf;
|
|
103 ngx_buf_t stco_data_buf;
|
|
104 ngx_buf_t co64_atom_buf;
|
|
105 ngx_buf_t co64_data_buf;
|
638
|
106
|
|
107 ngx_mp4_stsc_entry_t stsc_chunk_entry;
|
|
108 } ngx_http_mp4_trak_t;
|
|
109
|
|
110
|
|
111 typedef struct {
|
|
112 ngx_file_t file;
|
|
113
|
|
114 u_char *buffer;
|
|
115 u_char *buffer_start;
|
|
116 u_char *buffer_pos;
|
|
117 u_char *buffer_end;
|
|
118 size_t buffer_size;
|
|
119
|
|
120 off_t offset;
|
|
121 off_t end;
|
|
122 off_t content_length;
|
|
123 ngx_uint_t start;
|
|
124 uint32_t timescale;
|
|
125 ngx_http_request_t *request;
|
|
126 ngx_array_t trak;
|
|
127 ngx_http_mp4_trak_t traks[2];
|
|
128
|
|
129 size_t ftyp_size;
|
|
130 size_t moov_size;
|
|
131
|
|
132 ngx_chain_t *out;
|
|
133 ngx_chain_t ftyp_atom;
|
|
134 ngx_chain_t moov_atom;
|
|
135 ngx_chain_t mvhd_atom;
|
|
136 ngx_chain_t mdat_atom;
|
|
137 ngx_chain_t mdat_data;
|
|
138
|
|
139 ngx_buf_t ftyp_atom_buf;
|
|
140 ngx_buf_t moov_atom_buf;
|
|
141 ngx_buf_t mvhd_atom_buf;
|
|
142 ngx_buf_t mdat_atom_buf;
|
|
143 ngx_buf_t mdat_data_buf;
|
|
144
|
|
145 u_char moov_atom_header[8];
|
|
146 u_char mdat_atom_header[16];
|
|
147 } ngx_http_mp4_file_t;
|
|
148
|
|
149
|
|
150 typedef struct {
|
|
151 char *name;
|
|
152 ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4,
|
|
153 uint64_t atom_data_size);
|
|
154 } ngx_http_mp4_atom_handler_t;
|
|
155
|
|
156
|
|
157 #define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8)
|
|
158 #define ngx_mp4_atom_data(mp4) mp4->buffer_pos
|
|
159 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
|
|
160
|
|
161
|
|
162 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
|
|
163 ((u_char *) (p))[4] = n1; \
|
|
164 ((u_char *) (p))[5] = n2; \
|
|
165 ((u_char *) (p))[6] = n3; \
|
|
166 ((u_char *) (p))[7] = n4
|
|
167
|
|
168 #define ngx_mp4_get_32value(p) \
|
658
|
169 ( ((uint32_t) ((u_char *) (p))[0] << 24) \
|
|
170 + ( ((u_char *) (p))[1] << 16) \
|
|
171 + ( ((u_char *) (p))[2] << 8) \
|
|
172 + ( ((u_char *) (p))[3]) )
|
638
|
173
|
|
174 #define ngx_mp4_set_32value(p, n) \
|
|
175 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
|
|
176 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
|
|
177 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
|
|
178 ((u_char *) (p))[3] = (u_char) (n)
|
|
179
|
|
180 #define ngx_mp4_get_64value(p) \
|
|
181 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
|
|
182 + ((uint64_t) ((u_char *) (p))[1] << 48) \
|
|
183 + ((uint64_t) ((u_char *) (p))[2] << 40) \
|
|
184 + ((uint64_t) ((u_char *) (p))[3] << 32) \
|
|
185 + ((uint64_t) ((u_char *) (p))[4] << 24) \
|
|
186 + ( ((u_char *) (p))[5] << 16) \
|
|
187 + ( ((u_char *) (p))[6] << 8) \
|
|
188 + ( ((u_char *) (p))[7]) )
|
|
189
|
|
190 #define ngx_mp4_set_64value(p, n) \
|
642
|
191 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
|
|
192 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
|
|
193 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
|
|
194 ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \
|
|
195 ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \
|
|
196 ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \
|
|
197 ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \
|
|
198 ((u_char *) (p))[7] = (u_char) (n)
|
638
|
199
|
|
200 #define ngx_mp4_last_trak(mp4) \
|
|
201 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
|
|
202
|
|
203
|
|
204 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
|
|
205 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
206 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
|
|
207 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4);
|
|
208 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
|
|
209 uint64_t atom_data_size);
|
|
210 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
|
|
211 uint64_t atom_data_size);
|
|
212 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
|
|
213 uint64_t atom_data_size);
|
|
214 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
|
|
215 off_t start_offset);
|
|
216 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
|
|
217 uint64_t atom_data_size);
|
|
218 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
219 uint64_t atom_data_size);
|
|
220 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
221 ngx_http_mp4_trak_t *trak);
|
|
222 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
|
|
223 uint64_t atom_data_size);
|
|
224 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
|
|
225 uint64_t atom_data_size);
|
|
226 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
227 uint64_t atom_data_size);
|
|
228 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
229 ngx_http_mp4_trak_t *trak);
|
|
230 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
|
|
231 uint64_t atom_data_size);
|
|
232 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
|
|
233 uint64_t atom_data_size);
|
|
234 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
235 uint64_t atom_data_size);
|
|
236 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
237 ngx_http_mp4_trak_t *trak);
|
|
238 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
|
|
239 uint64_t atom_data_size);
|
|
240 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
|
|
241 uint64_t atom_data_size);
|
|
242 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
|
|
243 uint64_t atom_data_size);
|
|
244 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
245 uint64_t atom_data_size);
|
|
246 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
247 ngx_http_mp4_trak_t *trak);
|
|
248 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
|
|
249 uint64_t atom_data_size);
|
|
250 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
251 uint64_t atom_data_size);
|
|
252 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
253 ngx_http_mp4_trak_t *trak);
|
|
254 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
255 uint64_t atom_data_size);
|
|
256 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
257 ngx_http_mp4_trak_t *trak);
|
|
258 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
259 uint64_t atom_data_size);
|
|
260 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
261 ngx_http_mp4_trak_t *trak);
|
|
262 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
263 uint64_t atom_data_size);
|
|
264 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
265 ngx_http_mp4_trak_t *trak);
|
|
266 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
267 uint64_t atom_data_size);
|
|
268 static void ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
269 ngx_http_mp4_trak_t *trak);
|
|
270 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
271 uint64_t atom_data_size);
|
|
272 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
273 ngx_http_mp4_trak_t *trak);
|
|
274 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
275 ngx_http_mp4_trak_t *trak, int32_t adjustment);
|
640
|
276 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
277 uint64_t atom_data_size);
|
|
278 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
279 ngx_http_mp4_trak_t *trak);
|
|
280 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
281 ngx_http_mp4_trak_t *trak, off_t adjustment);
|
638
|
282 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
283 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
|
|
284 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
|
|
285
|
|
286 static ngx_command_t ngx_http_mp4_commands[] = {
|
|
287
|
|
288 { ngx_string("mp4"),
|
|
289 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
|
|
290 ngx_http_mp4,
|
|
291 0,
|
|
292 0,
|
|
293 NULL },
|
|
294
|
|
295 { ngx_string("mp4_buffer_size"),
|
|
296 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
297 ngx_conf_set_size_slot,
|
|
298 NGX_HTTP_LOC_CONF_OFFSET,
|
|
299 offsetof(ngx_http_mp4_conf_t, buffer_size),
|
|
300 NULL },
|
|
301
|
|
302 { ngx_string("mp4_max_buffer_size"),
|
|
303 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
304 ngx_conf_set_size_slot,
|
|
305 NGX_HTTP_LOC_CONF_OFFSET,
|
|
306 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
307 NULL },
|
|
308
|
|
309 ngx_null_command
|
|
310 };
|
|
311
|
|
312
|
|
313 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
314 NULL, /* preconfiguration */
|
|
315 NULL, /* postconfiguration */
|
|
316
|
|
317 NULL, /* create main configuration */
|
|
318 NULL, /* init main configuration */
|
|
319
|
|
320 NULL, /* create server configuration */
|
|
321 NULL, /* merge server configuration */
|
|
322
|
|
323 ngx_http_mp4_create_conf, /* create location configuration */
|
|
324 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
325 };
|
|
326
|
|
327
|
|
328 ngx_module_t ngx_http_mp4_module = {
|
|
329 NGX_MODULE_V1,
|
|
330 &ngx_http_mp4_module_ctx, /* module context */
|
|
331 ngx_http_mp4_commands, /* module directives */
|
|
332 NGX_HTTP_MODULE, /* module type */
|
|
333 NULL, /* init master */
|
|
334 NULL, /* init module */
|
|
335 NULL, /* init process */
|
|
336 NULL, /* init thread */
|
|
337 NULL, /* exit thread */
|
|
338 NULL, /* exit process */
|
|
339 NULL, /* exit master */
|
|
340 NGX_MODULE_V1_PADDING
|
|
341 };
|
|
342
|
|
343
|
|
344 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
|
|
345 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
346 { "moov", ngx_http_mp4_read_moov_atom },
|
|
347 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
348 { NULL, NULL }
|
|
349 };
|
|
350
|
|
351 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
|
|
352 { "mvhd", ngx_http_mp4_read_mvhd_atom },
|
|
353 { "trak", ngx_http_mp4_read_trak_atom },
|
|
354 { "cmov", ngx_http_mp4_read_cmov_atom },
|
|
355 { NULL, NULL }
|
|
356 };
|
|
357
|
|
358 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
|
|
359 { "tkhd", ngx_http_mp4_read_tkhd_atom },
|
|
360 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
361 { NULL, NULL }
|
|
362 };
|
|
363
|
|
364 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
|
|
365 { "mdhd", ngx_http_mp4_read_mdhd_atom },
|
|
366 { "hdlr", ngx_http_mp4_read_hdlr_atom },
|
|
367 { "minf", ngx_http_mp4_read_minf_atom },
|
|
368 { NULL, NULL }
|
|
369 };
|
|
370
|
|
371 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
|
|
372 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
373 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
374 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
375 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
376 { NULL, NULL }
|
|
377 };
|
|
378
|
|
379 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
380 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
381 { "stts", ngx_http_mp4_read_stts_atom },
|
|
382 { "stss", ngx_http_mp4_read_stss_atom },
|
|
383 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
384 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
385 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
386 { "stco", ngx_http_mp4_read_stco_atom },
|
640
|
387 { "co64", ngx_http_mp4_read_co64_atom },
|
638
|
388 { NULL, NULL }
|
|
389 };
|
|
390
|
|
391
|
|
392 static ngx_int_t
|
|
393 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
394 {
|
|
395 u_char *last;
|
|
396 size_t root;
|
|
397 ngx_int_t rc, start;
|
|
398 ngx_uint_t level;
|
|
399 ngx_str_t path, value;
|
|
400 ngx_log_t *log;
|
|
401 ngx_buf_t *b;
|
|
402 ngx_chain_t out;
|
|
403 ngx_http_mp4_file_t *mp4;
|
|
404 ngx_open_file_info_t of;
|
|
405 ngx_http_core_loc_conf_t *clcf;
|
|
406
|
|
407 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
408 return NGX_HTTP_NOT_ALLOWED;
|
|
409 }
|
|
410
|
|
411 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
412 return NGX_DECLINED;
|
|
413 }
|
|
414
|
|
415 rc = ngx_http_discard_request_body(r);
|
|
416
|
|
417 if (rc != NGX_OK) {
|
|
418 return rc;
|
|
419 }
|
|
420
|
|
421 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
422 if (last == NULL) {
|
|
423 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
424 }
|
|
425
|
|
426 log = r->connection->log;
|
|
427
|
|
428 path.len = last - path.data;
|
|
429
|
|
430 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
431 "http mp4 filename: \"%V\"", &path);
|
|
432
|
|
433 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
434
|
|
435 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
436
|
|
437 of.read_ahead = clcf->read_ahead;
|
|
438 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
439 of.valid = clcf->open_file_cache_valid;
|
|
440 of.min_uses = clcf->open_file_cache_min_uses;
|
|
441 of.errors = clcf->open_file_cache_errors;
|
|
442 of.events = clcf->open_file_cache_events;
|
662
|
443 #if (NGX_HAVE_OPENAT)
|
|
444 of.disable_symlinks = clcf->disable_symlinks;
|
|
445 #endif
|
638
|
446
|
|
447 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
448 != NGX_OK)
|
|
449 {
|
|
450 switch (of.err) {
|
|
451
|
|
452 case 0:
|
|
453 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
454
|
|
455 case NGX_ENOENT:
|
|
456 case NGX_ENOTDIR:
|
|
457 case NGX_ENAMETOOLONG:
|
|
458
|
|
459 level = NGX_LOG_ERR;
|
|
460 rc = NGX_HTTP_NOT_FOUND;
|
|
461 break;
|
|
462
|
|
463 case NGX_EACCES:
|
662
|
464 #if (NGX_HAVE_OPENAT)
|
|
465 case NGX_EMLINK:
|
|
466 case NGX_ELOOP:
|
|
467 #endif
|
638
|
468
|
|
469 level = NGX_LOG_ERR;
|
|
470 rc = NGX_HTTP_FORBIDDEN;
|
|
471 break;
|
|
472
|
|
473 default:
|
|
474
|
|
475 level = NGX_LOG_CRIT;
|
|
476 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
477 break;
|
|
478 }
|
|
479
|
|
480 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
481 ngx_log_error(level, log, of.err,
|
|
482 "%s \"%s\" failed", of.failed, path.data);
|
|
483 }
|
|
484
|
|
485 return rc;
|
|
486 }
|
|
487
|
|
488 if (!of.is_file) {
|
|
489
|
|
490 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
491 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
492 ngx_close_file_n " \"%s\" failed", path.data);
|
|
493 }
|
|
494
|
|
495 return NGX_DECLINED;
|
|
496 }
|
|
497
|
|
498 r->root_tested = !r->error_page;
|
|
499 r->allow_ranges = 1;
|
|
500
|
|
501 start = -1;
|
|
502 r->headers_out.content_length_n = of.size;
|
|
503 mp4 = NULL;
|
|
504 b = NULL;
|
|
505
|
|
506 if (r->args.len) {
|
|
507
|
|
508 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
509
|
642
|
510 /*
|
|
511 * A Flash player may send start value with a lot of digits
|
|
512 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
513 * infinities become negative numbers after (int) conversion.
|
|
514 */
|
|
515
|
|
516 ngx_set_errno(0);
|
|
517 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
518
|
|
519 if (ngx_errno == 0 && start >= 0) {
|
638
|
520 r->allow_ranges = 0;
|
|
521
|
|
522 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
523 if (mp4 == NULL) {
|
|
524 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
525 }
|
|
526
|
|
527 mp4->file.fd = of.fd;
|
|
528 mp4->file.name = path;
|
|
529 mp4->file.log = r->connection->log;;
|
|
530 mp4->end = of.size;
|
|
531 mp4->start = (ngx_uint_t) start;
|
|
532 mp4->request = r;
|
|
533
|
|
534 switch (ngx_http_mp4_process(mp4)) {
|
|
535
|
|
536 case NGX_DECLINED:
|
|
537 if (mp4->buffer) {
|
|
538 ngx_pfree(r->pool, mp4->buffer);
|
|
539 }
|
|
540
|
|
541 ngx_pfree(r->pool, mp4);
|
|
542 mp4 = NULL;
|
|
543
|
|
544 break;
|
|
545
|
|
546 case NGX_OK:
|
|
547 r->headers_out.content_length_n = mp4->content_length;
|
|
548 break;
|
|
549
|
|
550 default: /* NGX_ERROR */
|
|
551 if (mp4->buffer) {
|
|
552 ngx_pfree(r->pool, mp4->buffer);
|
|
553 }
|
|
554
|
|
555 ngx_pfree(r->pool, mp4);
|
|
556
|
|
557 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
558 }
|
|
559 }
|
|
560 }
|
|
561 }
|
|
562
|
|
563 log->action = "sending mp4 to client";
|
|
564
|
|
565 if (clcf->directio <= of.size) {
|
|
566
|
|
567 /*
|
|
568 * DIRECTIO is set on transfer only
|
|
569 * to allow kernel to cache "moov" atom
|
|
570 */
|
|
571
|
|
572 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
573 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
574 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
575 }
|
|
576
|
|
577 of.is_directio = 1;
|
|
578
|
|
579 if (mp4) {
|
|
580 mp4->file.directio = 1;
|
|
581 }
|
|
582 }
|
|
583
|
|
584 r->headers_out.status = NGX_HTTP_OK;
|
|
585 r->headers_out.last_modified_time = of.mtime;
|
|
586
|
|
587 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
588 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
589 }
|
|
590
|
|
591 if (mp4 == NULL) {
|
|
592 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
593 if (b == NULL) {
|
|
594 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
595 }
|
|
596
|
|
597 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
598 if (b->file == NULL) {
|
|
599 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
600 }
|
|
601 }
|
|
602
|
|
603 rc = ngx_http_send_header(r);
|
|
604
|
|
605 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
606 return rc;
|
|
607 }
|
|
608
|
|
609 if (mp4) {
|
|
610 return ngx_http_output_filter(r, mp4->out);
|
|
611 }
|
|
612
|
|
613 b->file_pos = 0;
|
|
614 b->file_last = of.size;
|
|
615
|
|
616 b->in_file = b->file_last ? 1 : 0;
|
|
617 b->last_buf = 1;
|
|
618 b->last_in_chain = 1;
|
|
619
|
|
620 b->file->fd = of.fd;
|
|
621 b->file->name = path;
|
|
622 b->file->log = log;
|
|
623 b->file->directio = of.is_directio;
|
|
624
|
|
625 out.buf = b;
|
|
626 out.next = NULL;
|
|
627
|
|
628 return ngx_http_output_filter(r, &out);
|
|
629 }
|
|
630
|
|
631
|
|
632 static ngx_int_t
|
|
633 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
634 {
|
|
635 off_t start_offset, adjustment;
|
|
636 ngx_int_t rc;
|
|
637 ngx_uint_t i, j;
|
|
638 ngx_chain_t **prev;
|
|
639 ngx_http_mp4_trak_t *trak;
|
|
640 ngx_http_mp4_conf_t *conf;
|
|
641
|
|
642 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
643 "mp4 start:%ui", mp4->start);
|
|
644
|
|
645 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
646
|
|
647 mp4->buffer_size = conf->buffer_size;
|
|
648
|
|
649 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
650 if (rc != NGX_OK) {
|
|
651 return rc;
|
|
652 }
|
|
653
|
|
654 if (mp4->trak.nelts == 0) {
|
|
655 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
656 "no mp4 trak atoms were found in \"%s\"",
|
|
657 mp4->file.name.data);
|
|
658 return NGX_ERROR;
|
|
659 }
|
|
660
|
|
661 if (mp4->mdat_atom.buf == NULL) {
|
|
662 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
663 "no mp4 mdat atom was found in \"%s\"",
|
|
664 mp4->file.name.data);
|
|
665 return NGX_ERROR;
|
|
666 }
|
|
667
|
|
668 prev = &mp4->out;
|
|
669
|
|
670 if (mp4->ftyp_atom.buf) {
|
|
671 *prev = &mp4->ftyp_atom;
|
|
672 prev = &mp4->ftyp_atom.next;
|
|
673 }
|
|
674
|
|
675 *prev = &mp4->moov_atom;
|
|
676 prev = &mp4->moov_atom.next;
|
|
677
|
|
678 if (mp4->mvhd_atom.buf) {
|
|
679 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
680 *prev = &mp4->mvhd_atom;
|
|
681 prev = &mp4->mvhd_atom.next;
|
|
682 }
|
|
683
|
|
684 start_offset = mp4->end;
|
|
685 trak = mp4->trak.elts;
|
|
686
|
|
687 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
688
|
|
689 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
690 return NGX_ERROR;
|
|
691 }
|
|
692
|
|
693 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
694 return NGX_ERROR;
|
|
695 }
|
|
696
|
|
697 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
698
|
|
699 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
700 return NGX_ERROR;
|
|
701 }
|
|
702
|
|
703 ngx_http_mp4_update_stsz_atom(mp4, &trak[i]);
|
|
704
|
640
|
705 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
706 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
707 return NGX_ERROR;
|
|
708 }
|
|
709
|
|
710 } else {
|
|
711 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
712 return NGX_ERROR;
|
|
713 }
|
638
|
714 }
|
|
715
|
|
716 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
717 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
718 trak[i].size += trak[i].mdhd_size;
|
|
719 trak[i].size += trak[i].hdlr_size;
|
|
720 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
721 trak[i].size += trak[i].tkhd_size;
|
|
722 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
723
|
|
724 mp4->moov_size += trak[i].size;
|
|
725
|
|
726 if (start_offset > trak[i].start_offset) {
|
|
727 start_offset = trak[i].start_offset;
|
|
728 }
|
|
729
|
|
730 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
731 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
732
|
|
733 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
734 if (trak[i].out[j].buf) {
|
|
735 *prev = &trak[i].out[j];
|
|
736 prev = &trak[i].out[j].next;
|
|
737 }
|
|
738 }
|
|
739 }
|
|
740
|
|
741 mp4->moov_size += 8;
|
|
742
|
|
743 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
744 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
745 mp4->content_length += mp4->moov_size;
|
|
746
|
|
747 *prev = &mp4->mdat_atom;
|
|
748
|
|
749 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
750 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
751 - start_offset;
|
|
752
|
|
753 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
754 "mp4 adjustment:%D", adjustment);
|
|
755
|
|
756 for (i = 0; i < mp4->trak.nelts; i++) {
|
640
|
757 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
758 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
759 } else {
|
|
760 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
761 }
|
638
|
762 }
|
|
763
|
|
764 return NGX_OK;
|
|
765 }
|
|
766
|
|
767
|
|
768 typedef struct {
|
|
769 u_char size[4];
|
|
770 u_char name[4];
|
|
771 } ngx_mp4_atom_header_t;
|
|
772
|
|
773 typedef struct {
|
|
774 u_char size[4];
|
|
775 u_char name[4];
|
|
776 u_char size64[8];
|
|
777 } ngx_mp4_atom_header64_t;
|
|
778
|
|
779
|
|
780 static ngx_int_t
|
|
781 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
782 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
783 {
|
|
784 off_t end;
|
|
785 size_t atom_header_size;
|
|
786 u_char *atom_header, *atom_name;
|
|
787 uint64_t atom_size;
|
|
788 ngx_int_t rc;
|
|
789 ngx_uint_t n;
|
|
790
|
|
791 end = mp4->offset + atom_data_size;
|
|
792
|
|
793 while (mp4->offset < end) {
|
|
794
|
|
795 if (mp4->buffer_pos + sizeof(uint32_t) > mp4->buffer_end) {
|
|
796 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
797 return NGX_ERROR;
|
|
798 }
|
|
799 }
|
|
800
|
|
801 atom_header = mp4->buffer_pos;
|
|
802 atom_size = ngx_mp4_get_32value(atom_header);
|
|
803 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
804
|
|
805 if (atom_size == 0) {
|
|
806 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
807 "mp4 atom end");
|
|
808 return NGX_OK;
|
|
809 }
|
|
810
|
|
811 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
812
|
|
813 if (atom_size == 1) {
|
|
814
|
|
815 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header64_t)
|
|
816 > mp4->buffer_end)
|
|
817 {
|
|
818 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
819 return NGX_ERROR;
|
|
820 }
|
|
821
|
|
822 atom_header = mp4->buffer_pos;
|
|
823 }
|
|
824
|
|
825 /* 64-bit atom size */
|
|
826 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
827 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
828
|
|
829 } else {
|
|
830 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
831 "\"%s\" mp4 atom is too small:%uL",
|
|
832 mp4->file.name.data, atom_size);
|
|
833 return NGX_ERROR;
|
|
834 }
|
|
835 }
|
|
836
|
|
837 if (mp4->buffer_pos + sizeof(ngx_mp4_atom_header_t) > mp4->buffer_end) {
|
|
838 if (ngx_http_mp4_read(mp4) != NGX_OK) {
|
|
839 return NGX_ERROR;
|
|
840 }
|
|
841
|
|
842 atom_header = mp4->buffer_pos;
|
|
843 }
|
|
844
|
|
845 atom_name = atom_header + sizeof(uint32_t);
|
|
846
|
|
847 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
848 "mp4 atom: %*s @%O:%uL",
|
|
849 4, atom_name, mp4->offset, atom_size);
|
|
850
|
|
851 for (n = 0; atom[n].name; n++) {
|
|
852
|
|
853 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
854
|
|
855 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
856
|
|
857 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
858 if (rc != NGX_OK) {
|
|
859 return rc;
|
|
860 }
|
|
861
|
|
862 goto next;
|
|
863 }
|
|
864 }
|
|
865
|
|
866 ngx_mp4_atom_next(mp4, atom_size);
|
|
867
|
|
868 next:
|
|
869 continue;
|
|
870 }
|
|
871
|
|
872 return NGX_OK;
|
|
873 }
|
|
874
|
|
875
|
|
876 static ngx_int_t
|
|
877 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4)
|
|
878 {
|
|
879 ngx_int_t n;
|
|
880
|
|
881 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
882 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
883 }
|
|
884
|
|
885 if (mp4->buffer == NULL) {
|
|
886 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
887 if (mp4->buffer == NULL) {
|
|
888 return NGX_ERROR;
|
|
889 }
|
|
890
|
|
891 mp4->buffer_start = mp4->buffer;
|
|
892 mp4->buffer_end = mp4->buffer + mp4->buffer_size;
|
|
893 }
|
|
894
|
|
895 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
896 mp4->offset);
|
|
897
|
|
898 if (n == NGX_ERROR) {
|
|
899 return NGX_ERROR;
|
|
900 }
|
|
901
|
|
902 if (n == 0) {
|
|
903 return NGX_OK;
|
|
904 }
|
|
905
|
|
906 mp4->buffer_pos = mp4->buffer_start;
|
|
907
|
|
908 return NGX_OK;
|
|
909 }
|
|
910
|
|
911
|
|
912 static ngx_int_t
|
|
913 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
914 {
|
|
915 u_char *ftyp_atom;
|
|
916 size_t atom_size;
|
|
917 ngx_buf_t *atom;
|
|
918
|
|
919 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
920
|
|
921 if (atom_data_size > 1024) {
|
|
922 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
923 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
924 mp4->file.name.data, atom_data_size);
|
|
925 return NGX_ERROR;
|
|
926 }
|
|
927
|
|
928 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
929
|
|
930 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
931 if (ftyp_atom == NULL) {
|
|
932 return NGX_ERROR;
|
|
933 }
|
|
934
|
|
935 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
936 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
937
|
|
938 /*
|
|
939 * only moov atom content is guaranteed to be in mp4->buffer
|
|
940 * during sending response, so ftyp atom content should be copied
|
|
941 */
|
|
942 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
943 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
944
|
|
945 atom = &mp4->ftyp_atom_buf;
|
|
946 atom->temporary = 1;
|
|
947 atom->pos = ftyp_atom;
|
|
948 atom->last = ftyp_atom + atom_size;
|
|
949
|
|
950 mp4->ftyp_atom.buf = atom;
|
|
951 mp4->ftyp_size = atom_size;
|
|
952 mp4->content_length = atom_size;
|
|
953
|
|
954 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
955
|
|
956 return NGX_OK;
|
|
957 }
|
|
958
|
|
959
|
|
960 /*
|
|
961 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
962 * will be set to this buffer part after moov atom processing.
|
|
963 */
|
|
964 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
965
|
|
966 static ngx_int_t
|
|
967 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
968 {
|
|
969 ngx_int_t rc;
|
|
970 ngx_uint_t no_mdat;
|
|
971 ngx_buf_t *atom;
|
|
972 ngx_http_mp4_conf_t *conf;
|
|
973
|
|
974 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
975
|
|
976 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
977
|
|
978 if (no_mdat && mp4->start == 0) {
|
|
979 /*
|
|
980 * send original file if moov atom resides before
|
|
981 * mdat atom and client requests integral file
|
|
982 */
|
|
983 return NGX_DECLINED;
|
|
984 }
|
|
985
|
|
986 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
987
|
|
988 if (atom_data_size > mp4->buffer_size) {
|
|
989
|
|
990 if (atom_data_size > conf->max_buffer_size) {
|
|
991 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
992 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
993 "you may want to increase mp4_max_buffer_size",
|
|
994 mp4->file.name.data, atom_data_size);
|
|
995 return NGX_ERROR;
|
|
996 }
|
|
997
|
|
998 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
999 mp4->buffer = NULL;
|
|
1000 mp4->buffer_pos = NULL;
|
|
1001 mp4->buffer_end = NULL;
|
|
1002
|
|
1003 mp4->buffer_size = (size_t) atom_data_size
|
|
1004 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
1005 }
|
|
1006
|
|
1007 mp4->trak.elts = &mp4->traks;
|
|
1008 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
1009 mp4->trak.nalloc = 2;
|
|
1010 mp4->trak.pool = mp4->request->pool;
|
|
1011
|
|
1012 atom = &mp4->moov_atom_buf;
|
|
1013 atom->temporary = 1;
|
|
1014 atom->pos = mp4->moov_atom_header;
|
|
1015 atom->last = mp4->moov_atom_header + 8;
|
|
1016
|
|
1017 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
1018
|
|
1019 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
1020
|
|
1021 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
1022
|
|
1023 if (no_mdat) {
|
|
1024 mp4->buffer_start = mp4->buffer_pos;
|
|
1025 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
1026
|
|
1027 } else {
|
|
1028 /* skip atoms after moov atom */
|
|
1029 mp4->offset = mp4->end;
|
|
1030 }
|
|
1031
|
|
1032 return rc;
|
|
1033 }
|
|
1034
|
|
1035
|
|
1036 static ngx_int_t
|
|
1037 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1038 {
|
|
1039 ngx_buf_t *data;
|
|
1040
|
|
1041 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
1042
|
|
1043 data = &mp4->mdat_data_buf;
|
|
1044 data->file = &mp4->file;
|
|
1045 data->in_file = 1;
|
|
1046 data->last_buf = 1;
|
|
1047 data->last_in_chain = 1;
|
|
1048 data->file_last = mp4->offset + atom_data_size;
|
|
1049
|
|
1050 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
1051 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
1052 mp4->mdat_data.buf = data;
|
|
1053
|
|
1054 if (mp4->trak.nelts) {
|
|
1055 /* skip atoms after mdat atom */
|
|
1056 mp4->offset = mp4->end;
|
|
1057
|
|
1058 } else {
|
|
1059 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1060 }
|
|
1061
|
|
1062 return NGX_OK;
|
|
1063 }
|
|
1064
|
|
1065
|
|
1066 static size_t
|
|
1067 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
1068 {
|
|
1069 off_t atom_data_size;
|
|
1070 u_char *atom_header;
|
|
1071 uint32_t atom_header_size;
|
|
1072 uint64_t atom_size;
|
|
1073 ngx_buf_t *atom;
|
|
1074
|
|
1075 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
1076 mp4->mdat_data.buf->file_pos = start_offset;
|
|
1077
|
|
1078 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1079 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
1080
|
|
1081 atom_header = mp4->mdat_atom_header;
|
|
1082
|
642
|
1083 if ((uint64_t) atom_data_size > 0xffffffff) {
|
638
|
1084 atom_size = 1;
|
|
1085 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
1086 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
1087 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
1088 } else {
|
|
1089 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
1090 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
1091 }
|
|
1092
|
648
|
1093 mp4->content_length += atom_header_size + atom_data_size;
|
|
1094
|
638
|
1095 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1096 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
1097
|
|
1098 atom = &mp4->mdat_atom_buf;
|
|
1099 atom->temporary = 1;
|
|
1100 atom->pos = atom_header;
|
|
1101 atom->last = atom_header + atom_header_size;
|
|
1102
|
|
1103 return atom_header_size;
|
|
1104 }
|
|
1105
|
|
1106
|
|
1107 typedef struct {
|
|
1108 u_char size[4];
|
|
1109 u_char name[4];
|
|
1110 u_char version[1];
|
|
1111 u_char flags[3];
|
|
1112 u_char creation_time[4];
|
|
1113 u_char modification_time[4];
|
|
1114 u_char timescale[4];
|
|
1115 u_char duration[4];
|
|
1116 u_char rate[4];
|
|
1117 u_char volume[2];
|
|
1118 u_char reserved[10];
|
|
1119 u_char matrix[36];
|
|
1120 u_char preview_time[4];
|
|
1121 u_char preview_duration[4];
|
|
1122 u_char poster_time[4];
|
|
1123 u_char selection_time[4];
|
|
1124 u_char selection_duration[4];
|
|
1125 u_char current_time[4];
|
|
1126 u_char next_track_id[4];
|
|
1127 } ngx_mp4_mvhd_atom_t;
|
|
1128
|
|
1129 typedef struct {
|
|
1130 u_char size[4];
|
|
1131 u_char name[4];
|
|
1132 u_char version[1];
|
|
1133 u_char flags[3];
|
|
1134 u_char creation_time[8];
|
|
1135 u_char modification_time[8];
|
|
1136 u_char timescale[4];
|
|
1137 u_char duration[8];
|
|
1138 u_char rate[4];
|
|
1139 u_char volume[2];
|
|
1140 u_char reserved[10];
|
|
1141 u_char matrix[36];
|
|
1142 u_char preview_time[4];
|
|
1143 u_char preview_duration[4];
|
|
1144 u_char poster_time[4];
|
|
1145 u_char selection_time[4];
|
|
1146 u_char selection_duration[4];
|
|
1147 u_char current_time[4];
|
|
1148 u_char next_track_id[4];
|
|
1149 } ngx_mp4_mvhd64_atom_t;
|
|
1150
|
|
1151
|
|
1152 static ngx_int_t
|
|
1153 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1154 {
|
|
1155 u_char *atom_header;
|
|
1156 size_t atom_size;
|
|
1157 uint32_t timescale;
|
|
1158 uint64_t duration;
|
|
1159 ngx_buf_t *atom;
|
|
1160 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
1161 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
1162
|
|
1163 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
1164
|
|
1165 atom_header = ngx_mp4_atom_header(mp4);
|
|
1166 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
1167 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
1168 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
1169
|
|
1170 if (mvhd_atom->version[0] == 0) {
|
|
1171 /* version 0: 32-bit duration */
|
|
1172 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
1173 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
1174
|
|
1175 } else {
|
|
1176 /* version 1: 64-bit duration */
|
|
1177 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
1178 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
1179 }
|
|
1180
|
|
1181 mp4->timescale = timescale;
|
|
1182
|
|
1183 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1184 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
1185 timescale, duration, (double) duration / timescale);
|
|
1186
|
|
1187 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
1188
|
|
1189 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1190 "mvhd new duration:%uL, time:%.3fs",
|
|
1191 duration, (double) duration / timescale);
|
|
1192
|
|
1193 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1194 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
1195
|
|
1196 if (mvhd_atom->version[0] == 0) {
|
|
1197 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
1198
|
|
1199 } else {
|
|
1200 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
1201 }
|
|
1202
|
|
1203 atom = &mp4->mvhd_atom_buf;
|
|
1204 atom->temporary = 1;
|
|
1205 atom->pos = atom_header;
|
|
1206 atom->last = atom_header + atom_size;
|
|
1207
|
|
1208 mp4->mvhd_atom.buf = atom;
|
|
1209
|
|
1210 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1211
|
|
1212 return NGX_OK;
|
|
1213 }
|
|
1214
|
|
1215
|
|
1216 static ngx_int_t
|
|
1217 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1218 {
|
|
1219 u_char *atom_header, *atom_end;
|
|
1220 off_t atom_file_end;
|
|
1221 ngx_int_t rc;
|
|
1222 ngx_buf_t *atom;
|
|
1223 ngx_http_mp4_trak_t *trak;
|
|
1224
|
|
1225 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
1226
|
|
1227 trak = ngx_array_push(&mp4->trak);
|
|
1228 if (trak == NULL) {
|
|
1229 return NGX_ERROR;
|
|
1230 }
|
|
1231
|
|
1232 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
1233
|
|
1234 atom_header = ngx_mp4_atom_header(mp4);
|
|
1235 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
1236
|
|
1237 atom = &trak->trak_atom_buf;
|
|
1238 atom->temporary = 1;
|
|
1239 atom->pos = atom_header;
|
|
1240 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1241
|
|
1242 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
1243
|
|
1244 atom_end = mp4->buffer_pos + atom_data_size;
|
|
1245 atom_file_end = mp4->offset + atom_data_size;
|
|
1246
|
|
1247 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
1248
|
|
1249 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1250 "mp4 trak atom: %i", rc);
|
|
1251
|
|
1252 if (rc == NGX_DECLINED) {
|
|
1253 /* skip this trak */
|
|
1254 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
1255 mp4->trak.nelts--;
|
|
1256 mp4->buffer_pos = atom_end;
|
|
1257 mp4->offset = atom_file_end;
|
|
1258 return NGX_OK;
|
|
1259 }
|
|
1260
|
|
1261 return rc;
|
|
1262 }
|
|
1263
|
|
1264
|
|
1265 static void
|
|
1266 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
1267 ngx_http_mp4_trak_t *trak)
|
|
1268 {
|
|
1269 ngx_buf_t *atom;
|
|
1270
|
|
1271 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1272 atom = &trak->trak_atom_buf;
|
|
1273 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1274 }
|
|
1275
|
|
1276
|
|
1277 static ngx_int_t
|
|
1278 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1279 {
|
|
1280 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1281 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
1282 mp4->file.name.data);
|
|
1283
|
|
1284 return NGX_ERROR;
|
|
1285 }
|
|
1286
|
|
1287
|
|
1288 typedef struct {
|
|
1289 u_char size[4];
|
|
1290 u_char name[4];
|
|
1291 u_char version[1];
|
|
1292 u_char flags[3];
|
|
1293 u_char creation_time[4];
|
|
1294 u_char modification_time[4];
|
|
1295 u_char track_id[4];
|
|
1296 u_char reserved1[4];
|
|
1297 u_char duration[4];
|
|
1298 u_char reserved2[8];
|
|
1299 u_char layer[2];
|
|
1300 u_char group[2];
|
|
1301 u_char volume[2];
|
|
1302 u_char reverved3[2];
|
|
1303 u_char matrix[36];
|
|
1304 u_char width[4];
|
|
1305 u_char heigth[4];
|
|
1306 } ngx_mp4_tkhd_atom_t;
|
|
1307
|
|
1308 typedef struct {
|
|
1309 u_char size[4];
|
|
1310 u_char name[4];
|
|
1311 u_char version[1];
|
|
1312 u_char flags[3];
|
|
1313 u_char creation_time[8];
|
|
1314 u_char modification_time[8];
|
|
1315 u_char track_id[4];
|
|
1316 u_char reserved1[4];
|
|
1317 u_char duration[8];
|
|
1318 u_char reserved2[8];
|
|
1319 u_char layer[2];
|
|
1320 u_char group[2];
|
|
1321 u_char volume[2];
|
|
1322 u_char reverved3[2];
|
|
1323 u_char matrix[36];
|
|
1324 u_char width[4];
|
|
1325 u_char heigth[4];
|
|
1326 } ngx_mp4_tkhd64_atom_t;
|
|
1327
|
|
1328
|
|
1329 static ngx_int_t
|
|
1330 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1331 {
|
|
1332 u_char *atom_header;
|
|
1333 size_t atom_size;
|
|
1334 uint64_t duration;
|
|
1335 ngx_buf_t *atom;
|
|
1336 ngx_http_mp4_trak_t *trak;
|
|
1337 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
1338 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
1339
|
|
1340 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
1341
|
|
1342 atom_header = ngx_mp4_atom_header(mp4);
|
|
1343 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
1344 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
1345 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
1346
|
|
1347 if (tkhd_atom->version[0] == 0) {
|
|
1348 /* version 0: 32-bit duration */
|
|
1349 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
1350
|
|
1351 } else {
|
|
1352 /* version 1: 64-bit duration */
|
|
1353 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
1354 }
|
|
1355
|
|
1356 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1357 "tkhd duration:%uL, time:%.3fs",
|
|
1358 duration, (double) duration / mp4->timescale);
|
|
1359
|
|
1360 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
1361
|
|
1362 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1363 "tkhd new duration:%uL, time:%.3fs",
|
|
1364 duration, (double) duration / mp4->timescale);
|
|
1365
|
|
1366 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1367
|
|
1368 trak = ngx_mp4_last_trak(mp4);
|
|
1369 trak->tkhd_size = atom_size;
|
|
1370
|
|
1371 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
1372
|
|
1373 if (tkhd_atom->version[0] == 0) {
|
|
1374 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
1375
|
|
1376 } else {
|
|
1377 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
1378 }
|
|
1379
|
|
1380 atom = &trak->tkhd_atom_buf;
|
|
1381 atom->temporary = 1;
|
|
1382 atom->pos = atom_header;
|
|
1383 atom->last = atom_header + atom_size;
|
|
1384
|
|
1385 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
1386
|
|
1387 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1388
|
|
1389 return NGX_OK;
|
|
1390 }
|
|
1391
|
|
1392
|
|
1393 static ngx_int_t
|
|
1394 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1395 {
|
|
1396 u_char *atom_header;
|
|
1397 ngx_buf_t *atom;
|
|
1398 ngx_http_mp4_trak_t *trak;
|
|
1399
|
|
1400 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
1401
|
|
1402 atom_header = ngx_mp4_atom_header(mp4);
|
|
1403 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
1404
|
|
1405 trak = ngx_mp4_last_trak(mp4);
|
|
1406
|
|
1407 atom = &trak->mdia_atom_buf;
|
|
1408 atom->temporary = 1;
|
|
1409 atom->pos = atom_header;
|
|
1410 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1411
|
|
1412 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
1413
|
|
1414 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
1415 }
|
|
1416
|
|
1417
|
|
1418 static void
|
|
1419 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
1420 ngx_http_mp4_trak_t *trak)
|
|
1421 {
|
|
1422 ngx_buf_t *atom;
|
|
1423
|
|
1424 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1425 atom = &trak->mdia_atom_buf;
|
|
1426 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1427 }
|
|
1428
|
|
1429
|
|
1430 typedef struct {
|
|
1431 u_char size[4];
|
|
1432 u_char name[4];
|
|
1433 u_char version[1];
|
|
1434 u_char flags[3];
|
|
1435 u_char creation_time[4];
|
|
1436 u_char modification_time[4];
|
|
1437 u_char timescale[4];
|
|
1438 u_char duration[4];
|
|
1439 u_char language[2];
|
|
1440 u_char quality[2];
|
|
1441 } ngx_mp4_mdhd_atom_t;
|
|
1442
|
|
1443 typedef struct {
|
|
1444 u_char size[4];
|
|
1445 u_char name[4];
|
|
1446 u_char version[1];
|
|
1447 u_char flags[3];
|
|
1448 u_char creation_time[8];
|
|
1449 u_char modification_time[8];
|
|
1450 u_char timescale[4];
|
|
1451 u_char duration[8];
|
|
1452 u_char language[2];
|
|
1453 u_char quality[2];
|
|
1454 } ngx_mp4_mdhd64_atom_t;
|
|
1455
|
|
1456
|
|
1457 static ngx_int_t
|
|
1458 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1459 {
|
|
1460 u_char *atom_header;
|
|
1461 size_t atom_size;
|
|
1462 uint32_t timescale;
|
|
1463 uint64_t duration;
|
|
1464 ngx_buf_t *atom;
|
|
1465 ngx_http_mp4_trak_t *trak;
|
|
1466 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
1467 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
1468
|
|
1469 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
1470
|
|
1471 atom_header = ngx_mp4_atom_header(mp4);
|
|
1472 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
1473 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
1474 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
1475
|
|
1476 if (mdhd_atom->version[0] == 0) {
|
|
1477 /* version 0: everything is 32-bit */
|
|
1478 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
1479 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
1480
|
|
1481 } else {
|
|
1482 /* version 1: 64-bit duration and 32-bit timescale */
|
|
1483 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
1484 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
1485 }
|
|
1486
|
|
1487 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1488 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
1489 timescale, duration, (double) duration / timescale);
|
|
1490
|
|
1491 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
1492
|
|
1493 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1494 "mdhd new duration:%uL, time:%.3fs",
|
|
1495 duration, (double) duration / timescale);
|
|
1496
|
|
1497 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1498
|
|
1499 trak = ngx_mp4_last_trak(mp4);
|
|
1500 trak->mdhd_size = atom_size;
|
|
1501 trak->timescale = timescale;
|
|
1502
|
|
1503 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
1504
|
|
1505 if (mdhd_atom->version[0] == 0) {
|
|
1506 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
1507
|
|
1508 } else {
|
|
1509 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
1510 }
|
|
1511
|
|
1512 atom = &trak->mdhd_atom_buf;
|
|
1513 atom->temporary = 1;
|
|
1514 atom->pos = atom_header;
|
|
1515 atom->last = atom_header + atom_size;
|
|
1516
|
|
1517 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
1518
|
|
1519 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1520
|
|
1521 return NGX_OK;
|
|
1522 }
|
|
1523
|
|
1524
|
|
1525 static ngx_int_t
|
|
1526 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1527 {
|
|
1528 u_char *atom_header;
|
|
1529 size_t atom_size;
|
|
1530 ngx_buf_t *atom;
|
|
1531 ngx_http_mp4_trak_t *trak;
|
|
1532
|
|
1533 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
1534
|
|
1535 atom_header = ngx_mp4_atom_header(mp4);
|
|
1536 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1537 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1538 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
1539
|
|
1540 trak = ngx_mp4_last_trak(mp4);
|
|
1541
|
|
1542 atom = &trak->hdlr_atom_buf;
|
|
1543 atom->temporary = 1;
|
|
1544 atom->pos = atom_header;
|
|
1545 atom->last = atom_header + atom_size;
|
|
1546
|
|
1547 trak->hdlr_size = atom_size;
|
|
1548 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
1549
|
|
1550 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1551
|
|
1552 return NGX_OK;
|
|
1553 }
|
|
1554
|
|
1555
|
|
1556 static ngx_int_t
|
|
1557 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1558 {
|
|
1559 u_char *atom_header;
|
|
1560 ngx_buf_t *atom;
|
|
1561 ngx_http_mp4_trak_t *trak;
|
|
1562
|
|
1563 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
1564
|
|
1565 atom_header = ngx_mp4_atom_header(mp4);
|
|
1566 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
1567
|
|
1568 trak = ngx_mp4_last_trak(mp4);
|
|
1569
|
|
1570 atom = &trak->minf_atom_buf;
|
|
1571 atom->temporary = 1;
|
|
1572 atom->pos = atom_header;
|
|
1573 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1574
|
|
1575 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
1576
|
|
1577 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
1578 }
|
|
1579
|
|
1580
|
|
1581 static void
|
|
1582 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
1583 ngx_http_mp4_trak_t *trak)
|
|
1584 {
|
|
1585 ngx_buf_t *atom;
|
|
1586
|
|
1587 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
1588 + trak->vmhd_size
|
|
1589 + trak->smhd_size
|
|
1590 + trak->dinf_size;
|
|
1591 atom = &trak->minf_atom_buf;
|
|
1592 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1593 }
|
|
1594
|
|
1595
|
|
1596 static ngx_int_t
|
|
1597 ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1598 {
|
|
1599 u_char *atom_header;
|
|
1600 size_t atom_size;
|
|
1601 ngx_buf_t *atom;
|
|
1602 ngx_http_mp4_trak_t *trak;
|
|
1603
|
|
1604 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom");
|
|
1605
|
|
1606 atom_header = ngx_mp4_atom_header(mp4);
|
|
1607 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1608 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1609 ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd');
|
|
1610
|
|
1611 trak = ngx_mp4_last_trak(mp4);
|
|
1612
|
|
1613 atom = &trak->vmhd_atom_buf;
|
|
1614 atom->temporary = 1;
|
|
1615 atom->pos = atom_header;
|
|
1616 atom->last = atom_header + atom_size;
|
|
1617
|
|
1618 trak->vmhd_size += atom_size;
|
|
1619 trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom;
|
|
1620
|
|
1621 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1622
|
|
1623 return NGX_OK;
|
|
1624 }
|
|
1625
|
|
1626
|
|
1627 static ngx_int_t
|
|
1628 ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1629 {
|
|
1630 u_char *atom_header;
|
|
1631 size_t atom_size;
|
|
1632 ngx_buf_t *atom;
|
|
1633 ngx_http_mp4_trak_t *trak;
|
|
1634
|
|
1635 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
1636
|
|
1637 atom_header = ngx_mp4_atom_header(mp4);
|
|
1638 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1639 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1640 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
1641
|
|
1642 trak = ngx_mp4_last_trak(mp4);
|
|
1643
|
|
1644 atom = &trak->smhd_atom_buf;
|
|
1645 atom->temporary = 1;
|
|
1646 atom->pos = atom_header;
|
|
1647 atom->last = atom_header + atom_size;
|
|
1648
|
|
1649 trak->vmhd_size += atom_size;
|
|
1650 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
1651
|
|
1652 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1653
|
|
1654 return NGX_OK;
|
|
1655 }
|
|
1656
|
|
1657
|
|
1658 static ngx_int_t
|
|
1659 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1660 {
|
|
1661 u_char *atom_header;
|
|
1662 size_t atom_size;
|
|
1663 ngx_buf_t *atom;
|
|
1664 ngx_http_mp4_trak_t *trak;
|
|
1665
|
|
1666 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
1667
|
|
1668 atom_header = ngx_mp4_atom_header(mp4);
|
|
1669 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1670 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1671 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
1672
|
|
1673 trak = ngx_mp4_last_trak(mp4);
|
|
1674
|
|
1675 atom = &trak->dinf_atom_buf;
|
|
1676 atom->temporary = 1;
|
|
1677 atom->pos = atom_header;
|
|
1678 atom->last = atom_header + atom_size;
|
|
1679
|
|
1680 trak->dinf_size += atom_size;
|
|
1681 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
1682
|
|
1683 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1684
|
|
1685 return NGX_OK;
|
|
1686 }
|
|
1687
|
|
1688
|
|
1689 static ngx_int_t
|
|
1690 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1691 {
|
|
1692 u_char *atom_header;
|
|
1693 ngx_buf_t *atom;
|
|
1694 ngx_http_mp4_trak_t *trak;
|
|
1695
|
|
1696 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
1697
|
|
1698 atom_header = ngx_mp4_atom_header(mp4);
|
|
1699 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
1700
|
|
1701 trak = ngx_mp4_last_trak(mp4);
|
|
1702
|
|
1703 atom = &trak->stbl_atom_buf;
|
|
1704 atom->temporary = 1;
|
|
1705 atom->pos = atom_header;
|
|
1706 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1707
|
|
1708 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
1709
|
|
1710 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
1711 }
|
|
1712
|
|
1713
|
|
1714 static void
|
|
1715 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
1716 ngx_http_mp4_trak_t *trak)
|
|
1717 {
|
|
1718 ngx_buf_t *atom;
|
|
1719
|
|
1720 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1721 atom = &trak->stbl_atom_buf;
|
|
1722 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1723 }
|
|
1724
|
|
1725
|
|
1726 typedef struct {
|
|
1727 u_char size[4];
|
|
1728 u_char name[4];
|
|
1729 u_char version[1];
|
|
1730 u_char flags[3];
|
|
1731 u_char entries[4];
|
|
1732
|
|
1733 u_char media_size[4];
|
|
1734 u_char media_name[4];
|
|
1735 } ngx_mp4_stsd_atom_t;
|
|
1736
|
|
1737
|
|
1738 static ngx_int_t
|
|
1739 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1740 {
|
|
1741 u_char *atom_header, *atom_table;
|
|
1742 size_t atom_size;
|
|
1743 ngx_buf_t *atom;
|
|
1744 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
1745 ngx_http_mp4_trak_t *trak;
|
|
1746
|
|
1747 /* sample description atom */
|
|
1748
|
|
1749 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
1750
|
|
1751 atom_header = ngx_mp4_atom_header(mp4);
|
|
1752 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
1753 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1754 atom_table = atom_header + atom_size;
|
|
1755 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
1756 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
1757
|
|
1758 if ((uint64_t) (sizeof(ngx_mp4_stsd_atom_t) - sizeof(ngx_mp4_atom_header_t))
|
640
|
1759 > atom_data_size)
|
|
1760 {
|
638
|
1761 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1762 "\"%s\" mp4 stsd atom too large",
|
|
1763 mp4->file.name.data);
|
|
1764 return NGX_ERROR;
|
|
1765 }
|
|
1766
|
|
1767 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1768 "stsd entries:%uD, media:%*s",
|
|
1769 ngx_mp4_get_32value(stsd_atom->entries),
|
|
1770 4, stsd_atom->media_name);
|
|
1771
|
|
1772 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
1773
|
|
1774 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
1775 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
1776 {
|
|
1777 return NGX_DECLINED;
|
|
1778 }
|
|
1779
|
|
1780 trak = ngx_mp4_last_trak(mp4);
|
|
1781
|
|
1782 atom = &trak->stsd_atom_buf;
|
|
1783 atom->temporary = 1;
|
|
1784 atom->pos = atom_header;
|
|
1785 atom->last = atom_table;
|
|
1786
|
|
1787 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
1788 trak->size += atom_size;
|
|
1789
|
|
1790 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1791
|
|
1792 return NGX_OK;
|
|
1793 }
|
|
1794
|
|
1795
|
|
1796 typedef struct {
|
|
1797 u_char size[4];
|
|
1798 u_char name[4];
|
|
1799 u_char version[1];
|
|
1800 u_char flags[3];
|
|
1801 u_char entries[4];
|
|
1802 } ngx_mp4_stts_atom_t;
|
|
1803
|
|
1804 typedef struct {
|
|
1805 u_char count[4];
|
|
1806 u_char duration[4];
|
|
1807 } ngx_mp4_stts_entry_t;
|
|
1808
|
|
1809
|
|
1810 static ngx_int_t
|
|
1811 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1812 {
|
|
1813 u_char *atom_header, *atom_table, *atom_end;
|
|
1814 uint32_t entries;
|
|
1815 ngx_buf_t *atom, *data;
|
|
1816 ngx_mp4_stts_atom_t *stts_atom;
|
|
1817 ngx_http_mp4_trak_t *trak;
|
|
1818
|
|
1819 /* time-to-sample atom */
|
|
1820
|
|
1821 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
1822
|
|
1823 atom_header = ngx_mp4_atom_header(mp4);
|
|
1824 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
1825 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
1826
|
|
1827 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
1828
|
|
1829 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1830 "mp4 time-to-sample entries:%uD", entries);
|
|
1831
|
|
1832 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
1833 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
1834
|
|
1835 if ((uint64_t) (atom_end - stts_atom->version) > atom_data_size) {
|
|
1836 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1837 "\"%s\" mp4 stts atom too large",
|
|
1838 mp4->file.name.data);
|
|
1839 return NGX_ERROR;
|
|
1840 }
|
|
1841
|
|
1842 trak = ngx_mp4_last_trak(mp4);
|
|
1843 trak->time_to_sample_entries = entries;
|
|
1844
|
|
1845 atom = &trak->stts_atom_buf;
|
|
1846 atom->temporary = 1;
|
|
1847 atom->pos = atom_header;
|
|
1848 atom->last = atom_table;
|
|
1849
|
|
1850 data = &trak->stts_data_buf;
|
|
1851 data->temporary = 1;
|
|
1852 data->pos = atom_table;
|
|
1853 data->last = atom_end;
|
|
1854
|
|
1855 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
1856 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
1857
|
|
1858 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1859
|
|
1860 return NGX_OK;
|
|
1861 }
|
|
1862
|
|
1863
|
|
1864 static ngx_int_t
|
|
1865 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
1866 ngx_http_mp4_trak_t *trak)
|
|
1867 {
|
|
1868 size_t atom_size;
|
|
1869 uint32_t entries, count, duration;
|
|
1870 uint64_t start_time;
|
|
1871 ngx_buf_t *atom, *data;
|
|
1872 ngx_uint_t start_sample;
|
|
1873 ngx_mp4_stts_atom_t *stts_atom;
|
|
1874 ngx_mp4_stts_entry_t *entry, *end;
|
|
1875
|
|
1876 /*
|
|
1877 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
1878 * from mdia.mdhd atom which may reside after mdia.minf
|
|
1879 */
|
|
1880
|
|
1881 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1882 "mp4 stts atom update");
|
|
1883
|
|
1884 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
1885
|
|
1886 if (data == NULL) {
|
|
1887 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1888 "no mp4 stts atoms were found in \"%s\"",
|
|
1889 mp4->file.name.data);
|
|
1890 return NGX_ERROR;
|
|
1891 }
|
|
1892
|
|
1893 entries = trak->time_to_sample_entries;
|
644
|
1894 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
638
|
1895
|
|
1896 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1897 "time-to-sample start_time:%uL", start_time);
|
|
1898
|
|
1899 start_sample = 0;
|
|
1900 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
1901 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
1902
|
|
1903 while (entry < end) {
|
|
1904 count = ngx_mp4_get_32value(entry->count);
|
|
1905 duration = ngx_mp4_get_32value(entry->duration);
|
|
1906
|
|
1907 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1908 "count:%uD, duration:%uD", count, duration);
|
|
1909
|
650
|
1910 if (start_time < (uint64_t) count * duration) {
|
638
|
1911 start_sample += (ngx_uint_t) (start_time / duration);
|
|
1912 count -= start_sample;
|
|
1913 ngx_mp4_set_32value(entry->count, count);
|
|
1914 goto found;
|
|
1915 }
|
|
1916
|
|
1917 start_sample += count;
|
|
1918 start_time -= count * duration;
|
|
1919 entries--;
|
|
1920 entry++;
|
|
1921 }
|
|
1922
|
|
1923 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1924 "start time is out mp4 stts samples in \"%s\"",
|
|
1925 mp4->file.name.data);
|
|
1926
|
|
1927 return NGX_ERROR;
|
|
1928
|
|
1929 found:
|
|
1930
|
|
1931 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1932 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
1933
|
|
1934 trak->start_sample = start_sample;
|
|
1935
|
|
1936 data->pos = (u_char *) entry;
|
|
1937 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
1938 trak->size += atom_size;
|
|
1939
|
|
1940 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
1941 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
1942 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
1943 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
1944
|
|
1945 return NGX_OK;
|
|
1946 }
|
|
1947
|
|
1948
|
|
1949 typedef struct {
|
|
1950 u_char size[4];
|
|
1951 u_char name[4];
|
|
1952 u_char version[1];
|
|
1953 u_char flags[3];
|
|
1954 u_char entries[4];
|
|
1955 } ngx_http_mp4_stss_atom_t;
|
|
1956
|
|
1957
|
|
1958 static ngx_int_t
|
|
1959 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1960 {
|
|
1961 u_char *atom_header, *atom_table, *atom_end;
|
|
1962 uint32_t entries;
|
|
1963 ngx_buf_t *atom, *data;
|
|
1964 ngx_http_mp4_trak_t *trak;
|
|
1965 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
1966
|
|
1967 /* sync samples atom */
|
|
1968
|
|
1969 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
1970
|
|
1971 atom_header = ngx_mp4_atom_header(mp4);
|
|
1972 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
1973 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
1974
|
|
1975 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
1976
|
|
1977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1978 "sync sample entries:%uD", entries);
|
|
1979
|
|
1980 trak = ngx_mp4_last_trak(mp4);
|
|
1981 trak->sync_samples_entries = entries;
|
|
1982
|
|
1983 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
1984
|
|
1985 atom = &trak->stss_atom_buf;
|
|
1986 atom->temporary = 1;
|
|
1987 atom->pos = atom_header;
|
|
1988 atom->last = atom_table;
|
|
1989
|
|
1990 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
1991
|
|
1992 if ((uint64_t) (atom_end - stss_atom->version) > atom_data_size) {
|
|
1993 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1994 "\"%s\" mp4 stss atom too large", mp4->file.name.data);
|
|
1995 return NGX_ERROR;
|
|
1996 }
|
|
1997
|
|
1998 data = &trak->stss_data_buf;
|
|
1999 data->temporary = 1;
|
|
2000 data->pos = atom_table;
|
|
2001 data->last = atom_end;
|
|
2002
|
|
2003 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
2004 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
2005
|
|
2006 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2007
|
|
2008 return NGX_OK;
|
|
2009 }
|
|
2010
|
|
2011
|
|
2012 static ngx_int_t
|
|
2013 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
2014 ngx_http_mp4_trak_t *trak)
|
|
2015 {
|
|
2016 size_t atom_size;
|
|
2017 uint32_t entries, sample, start_sample, *entry, *end;
|
|
2018 ngx_buf_t *atom, *data;
|
|
2019 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
2020
|
|
2021 /*
|
|
2022 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
2023 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2024 * atom which may reside after mdia.minf
|
|
2025 */
|
|
2026
|
|
2027 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2028 "mp4 stss atom update");
|
|
2029
|
|
2030 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
2031
|
|
2032 if (data == NULL) {
|
|
2033 return NGX_OK;
|
|
2034 }
|
|
2035
|
|
2036 /* sync samples starts from 1 */
|
|
2037 start_sample = trak->start_sample + 1;
|
|
2038 entries = trak->sync_samples_entries;
|
|
2039
|
|
2040 entry = (uint32_t *) data->pos;
|
|
2041 end = (uint32_t *) data->last;
|
|
2042
|
|
2043 while (entry < end) {
|
|
2044 sample = ngx_mp4_get_32value(entry);
|
|
2045
|
|
2046 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2047 "start:%uD, sync:%uD", start_sample, sample);
|
|
2048
|
|
2049 if (sample >= start_sample) {
|
|
2050 goto found;
|
|
2051 }
|
|
2052
|
|
2053 entries--;
|
|
2054 entry++;
|
|
2055 }
|
|
2056
|
|
2057 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2058 "start sample is out of mp4 stss atom in \"%s\"",
|
|
2059 mp4->file.name.data);
|
|
2060
|
|
2061 return NGX_ERROR;
|
|
2062
|
|
2063 found:
|
|
2064
|
|
2065 data->pos = (u_char *) entry;
|
|
2066
|
|
2067 start_sample = trak->start_sample;
|
|
2068
|
|
2069 while (entry < end) {
|
|
2070 sample = ngx_mp4_get_32value(entry);
|
|
2071 sample -= start_sample;
|
|
2072 ngx_mp4_set_32value(entry, sample);
|
|
2073 entry++;
|
|
2074 }
|
|
2075
|
|
2076 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
2077 trak->size += atom_size;
|
|
2078
|
|
2079 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
2080 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
2081
|
|
2082 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
2083 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
2084
|
|
2085 return NGX_OK;
|
|
2086 }
|
|
2087
|
|
2088
|
|
2089 typedef struct {
|
|
2090 u_char size[4];
|
|
2091 u_char name[4];
|
|
2092 u_char version[1];
|
|
2093 u_char flags[3];
|
|
2094 u_char entries[4];
|
|
2095 } ngx_mp4_ctts_atom_t;
|
|
2096
|
|
2097 typedef struct {
|
|
2098 u_char count[4];
|
|
2099 u_char offset[4];
|
|
2100 } ngx_mp4_ctts_entry_t;
|
|
2101
|
|
2102
|
|
2103 static ngx_int_t
|
|
2104 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2105 {
|
|
2106 u_char *atom_header, *atom_table, *atom_end;
|
|
2107 uint32_t entries;
|
|
2108 ngx_buf_t *atom, *data;
|
|
2109 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
2110 ngx_http_mp4_trak_t *trak;
|
|
2111
|
|
2112 /* composition offsets atom */
|
|
2113
|
|
2114 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
2115
|
|
2116 atom_header = ngx_mp4_atom_header(mp4);
|
|
2117 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
2118 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
2119
|
|
2120 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
2121
|
|
2122 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2123 "composition offset entries:%uD", entries);
|
|
2124
|
|
2125 trak = ngx_mp4_last_trak(mp4);
|
|
2126 trak->composition_offset_entries = entries;
|
|
2127
|
|
2128 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
2129
|
|
2130 atom = &trak->ctts_atom_buf;
|
|
2131 atom->temporary = 1;
|
|
2132 atom->pos = atom_header;
|
|
2133 atom->last = atom_table;
|
|
2134
|
|
2135 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
2136
|
|
2137 if ((uint64_t) (atom_end - ctts_atom->version) > atom_data_size) {
|
|
2138 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2139 "\"%s\" mp4 ctts atom too large", mp4->file.name.data);
|
|
2140 return NGX_ERROR;
|
|
2141 }
|
|
2142
|
|
2143 data = &trak->ctts_data_buf;
|
|
2144 data->temporary = 1;
|
|
2145 data->pos = atom_table;
|
|
2146 data->last = atom_end;
|
|
2147
|
|
2148 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
2149 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
2150
|
|
2151 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2152
|
|
2153 return NGX_OK;
|
|
2154 }
|
|
2155
|
|
2156
|
|
2157 static void
|
|
2158 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
2159 ngx_http_mp4_trak_t *trak)
|
|
2160 {
|
|
2161 size_t atom_size;
|
|
2162 uint32_t entries, count, start_sample;
|
|
2163 ngx_buf_t *atom, *data;
|
|
2164 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
2165 ngx_mp4_ctts_entry_t *entry, *end;
|
|
2166
|
|
2167 /*
|
|
2168 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
2169 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2170 * atom which may reside after mdia.minf
|
|
2171 */
|
|
2172
|
|
2173 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2174 "mp4 ctts atom update");
|
|
2175
|
|
2176 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
2177
|
|
2178 if (data == NULL) {
|
|
2179 return;
|
|
2180 }
|
|
2181
|
|
2182 /* sync samples starts from 1 */
|
|
2183 start_sample = trak->start_sample + 1;
|
|
2184 entries = trak->composition_offset_entries;
|
|
2185 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
2186 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
2187
|
|
2188 while (entry < end) {
|
|
2189 count = ngx_mp4_get_32value(entry->count);
|
|
2190
|
|
2191 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2192 "start:%uD, count:%uD, offset:%uD",
|
|
2193 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
2194
|
|
2195 if (start_sample <= count) {
|
|
2196 count -= (start_sample - 1);
|
|
2197 ngx_mp4_set_32value(entry->count, count);
|
|
2198 goto found;
|
|
2199 }
|
|
2200
|
|
2201 start_sample -= count;
|
|
2202 entries--;
|
|
2203 entry++;
|
|
2204 }
|
|
2205
|
|
2206 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
2207 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
2208
|
|
2209 return;
|
|
2210
|
|
2211 found:
|
|
2212
|
|
2213 data->pos = (u_char *) entry;
|
|
2214 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
2215 trak->size += atom_size;
|
|
2216
|
|
2217 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
2218 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
2219
|
|
2220 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
2221 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
2222
|
|
2223 return;
|
|
2224 }
|
|
2225
|
|
2226
|
|
2227 typedef struct {
|
|
2228 u_char size[4];
|
|
2229 u_char name[4];
|
|
2230 u_char version[1];
|
|
2231 u_char flags[3];
|
|
2232 u_char entries[4];
|
|
2233 } ngx_mp4_stsc_atom_t;
|
|
2234
|
|
2235
|
|
2236 static ngx_int_t
|
|
2237 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2238 {
|
|
2239 u_char *atom_header, *atom_table, *atom_end;
|
|
2240 uint32_t entries;
|
|
2241 ngx_buf_t *atom, *data;
|
|
2242 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
2243 ngx_http_mp4_trak_t *trak;
|
|
2244
|
|
2245 /* sample-to-chunk atom */
|
|
2246
|
|
2247 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
2248
|
|
2249 atom_header = ngx_mp4_atom_header(mp4);
|
|
2250 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
2251 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
2252
|
|
2253 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
2254
|
|
2255 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2256 "sample-to-chunk entries:%uD", entries);
|
|
2257
|
|
2258 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
2259 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
2260
|
|
2261 if ((uint64_t) (atom_end - stsc_atom->version) > atom_data_size) {
|
|
2262 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2263 "\"%s\" mp4 stsc atom too large",
|
|
2264 mp4->file.name.data);
|
|
2265 return NGX_ERROR;
|
|
2266 }
|
|
2267
|
|
2268 trak = ngx_mp4_last_trak(mp4);
|
|
2269 trak->sample_to_chunk_entries = entries;
|
|
2270
|
|
2271 atom = &trak->stsc_atom_buf;
|
|
2272 atom->temporary = 1;
|
|
2273 atom->pos = atom_header;
|
|
2274 atom->last = atom_table;
|
|
2275
|
|
2276 data = &trak->stsc_data_buf;
|
|
2277 data->temporary = 1;
|
|
2278 data->pos = atom_table;
|
|
2279 data->last = atom_end;
|
|
2280
|
|
2281 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
2282 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
2283
|
|
2284 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2285
|
|
2286 return NGX_OK;
|
|
2287 }
|
|
2288
|
|
2289
|
|
2290 static ngx_int_t
|
|
2291 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
2292 ngx_http_mp4_trak_t *trak)
|
|
2293 {
|
|
2294 size_t atom_size;
|
|
2295 uint32_t start_sample, entries, chunk, samples, id,
|
|
2296 next_chunk, n;
|
|
2297 ngx_buf_t *atom, *data, *buf;
|
|
2298 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
2299 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
2300
|
|
2301 /*
|
|
2302 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
2303 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2304 * atom which may reside after mdia.minf
|
|
2305 */
|
|
2306
|
|
2307 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2308 "mp4 stsc atom update");
|
|
2309
|
|
2310 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
2311
|
|
2312 if (data == NULL) {
|
|
2313 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2314 "no mp4 stsc atoms were found in \"%s\"",
|
|
2315 mp4->file.name.data);
|
|
2316 return NGX_ERROR;
|
|
2317 }
|
|
2318
|
|
2319 start_sample = (uint32_t) trak->start_sample;
|
|
2320 entries = trak->sample_to_chunk_entries - 1;
|
|
2321
|
|
2322 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
2323 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
2324
|
|
2325 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2326 samples = ngx_mp4_get_32value(entry->samples);
|
|
2327 id = ngx_mp4_get_32value(entry->id);
|
|
2328 entry++;
|
|
2329
|
|
2330 while (entry < end) {
|
|
2331
|
|
2332 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2333
|
|
2334 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2335 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
2336 "samples:%uD, id:%uD",
|
|
2337 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
2338
|
|
2339 n = (next_chunk - chunk) * samples;
|
|
2340
|
|
2341 if (start_sample <= n) {
|
|
2342 goto found;
|
|
2343 }
|
|
2344
|
|
2345 start_sample -= n;
|
|
2346
|
|
2347 chunk = next_chunk;
|
|
2348 samples = ngx_mp4_get_32value(entry->samples);
|
|
2349 id = ngx_mp4_get_32value(entry->id);
|
|
2350 entries--;
|
|
2351 entry++;
|
|
2352 }
|
|
2353
|
|
2354 next_chunk = trak->chunks;
|
|
2355
|
|
2356 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2357 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
2358 start_sample, chunk, next_chunk - chunk, samples);
|
|
2359
|
|
2360 n = (next_chunk - chunk) * samples;
|
|
2361
|
|
2362 if (start_sample > n) {
|
|
2363 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2364 "start time is out mp4 stsc chunks in \"%s\"",
|
|
2365 mp4->file.name.data);
|
|
2366 return NGX_ERROR;
|
|
2367 }
|
|
2368
|
|
2369 found:
|
|
2370
|
|
2371 entries++;
|
|
2372 entry--;
|
|
2373
|
|
2374 if (samples == 0) {
|
|
2375 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2376 "zero number of samples in \"%s\"",
|
|
2377 mp4->file.name.data);
|
|
2378 return NGX_ERROR;
|
|
2379 }
|
|
2380
|
|
2381 trak->start_chunk = chunk - 1;
|
|
2382
|
|
2383 trak->start_chunk += start_sample / samples;
|
|
2384 trak->chunk_samples = start_sample % samples;
|
|
2385
|
|
2386 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2387 "start chunk:%ui, samples:%uD",
|
|
2388 trak->start_chunk, trak->chunk_samples);
|
|
2389
|
|
2390 data->pos = (u_char *) entry;
|
|
2391 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
2392
|
656
|
2393 ngx_mp4_set_32value(entry->chunk, 1);
|
|
2394
|
638
|
2395 if (trak->chunk_samples) {
|
|
2396
|
|
2397 first = &trak->stsc_chunk_entry;
|
|
2398 ngx_mp4_set_32value(first->chunk, 1);
|
|
2399 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
2400 ngx_mp4_set_32value(first->id, id);
|
|
2401
|
|
2402 buf = &trak->stsc_chunk_buf;
|
|
2403 buf->temporary = 1;
|
|
2404 buf->pos = (u_char *) first;
|
|
2405 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
2406
|
|
2407 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
2408
|
|
2409 ngx_mp4_set_32value(entry->chunk, 2);
|
|
2410
|
|
2411 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
2412 }
|
|
2413
|
|
2414 while (++entry < end) {
|
|
2415 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2416 chunk -= trak->start_chunk;
|
|
2417 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
2418 }
|
|
2419
|
|
2420 trak->size += atom_size;
|
|
2421
|
|
2422 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
2423 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
2424
|
|
2425 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
2426 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
2427
|
|
2428 return NGX_OK;
|
|
2429 }
|
|
2430
|
|
2431
|
|
2432 typedef struct {
|
|
2433 u_char size[4];
|
|
2434 u_char name[4];
|
|
2435 u_char version[1];
|
|
2436 u_char flags[3];
|
|
2437 u_char uniform_size[4];
|
|
2438 u_char entries[4];
|
|
2439 } ngx_mp4_stsz_atom_t;
|
|
2440
|
|
2441
|
|
2442 static ngx_int_t
|
|
2443 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2444 {
|
|
2445 u_char *atom_header, *atom_table, *atom_end;
|
|
2446 size_t atom_size;
|
|
2447 uint32_t entries, size;
|
|
2448 ngx_buf_t *atom, *data;
|
|
2449 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
2450 ngx_http_mp4_trak_t *trak;
|
|
2451
|
|
2452 /* sample sizes atom */
|
|
2453
|
|
2454 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
2455
|
|
2456 atom_header = ngx_mp4_atom_header(mp4);
|
|
2457 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
2458 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
2459
|
|
2460 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
2461 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
2462
|
|
2463 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2464 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
2465
|
|
2466 trak = ngx_mp4_last_trak(mp4);
|
|
2467 trak->sample_sizes_entries = entries;
|
|
2468
|
|
2469 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
2470
|
|
2471 atom = &trak->stsz_atom_buf;
|
|
2472 atom->temporary = 1;
|
|
2473 atom->pos = atom_header;
|
|
2474 atom->last = atom_table;
|
|
2475
|
|
2476 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
2477
|
|
2478 if (size == 0) {
|
|
2479 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
2480
|
|
2481 if ((uint64_t) (atom_end - stsz_atom->version) > atom_data_size) {
|
|
2482 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2483 "\"%s\" mp4 stsz atom too large",
|
|
2484 mp4->file.name.data);
|
|
2485 return NGX_ERROR;
|
|
2486 }
|
|
2487
|
|
2488 data = &trak->stsz_data_buf;
|
|
2489 data->temporary = 1;
|
|
2490 data->pos = atom_table;
|
|
2491 data->last = atom_end;
|
|
2492
|
|
2493 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
2494
|
|
2495 } else {
|
|
2496 /* if size != 0 then all samples are the same size */
|
|
2497 /* TODO : chunk samples */
|
|
2498 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
2499 ngx_mp4_set_32value(atom_header, atom_size);
|
|
2500 trak->size += atom_size;
|
|
2501 }
|
|
2502
|
|
2503 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2504
|
|
2505 return NGX_OK;
|
|
2506 }
|
|
2507
|
|
2508
|
|
2509 static void
|
|
2510 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
2511 ngx_http_mp4_trak_t *trak)
|
|
2512 {
|
|
2513 size_t atom_size;
|
|
2514 uint32_t *pos, *end;
|
|
2515 ngx_buf_t *atom, *data;
|
|
2516 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
2517
|
|
2518 /*
|
|
2519 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
2520 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2521 * atom which may reside after mdia.minf
|
|
2522 */
|
|
2523
|
|
2524 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2525 "mp4 stsz atom update");
|
|
2526
|
|
2527 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
2528
|
|
2529 if (data) {
|
|
2530 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
2531 end = (uint32_t *) data->pos;
|
|
2532
|
|
2533 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
2534 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
2535 }
|
|
2536
|
|
2537 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
640
|
2538 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
638
|
2539
|
|
2540 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
2541 trak->size += atom_size;
|
|
2542
|
|
2543 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
2544 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
2545
|
|
2546 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
2547 ngx_mp4_set_32value(stsz_atom->entries,
|
|
2548 trak->sample_sizes_entries - trak->start_sample);
|
|
2549 }
|
|
2550 }
|
|
2551
|
|
2552
|
|
2553 typedef struct {
|
|
2554 u_char size[4];
|
|
2555 u_char name[4];
|
|
2556 u_char version[1];
|
|
2557 u_char flags[3];
|
|
2558 u_char entries[4];
|
|
2559 } ngx_mp4_stco_atom_t;
|
|
2560
|
|
2561
|
|
2562 static ngx_int_t
|
|
2563 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2564 {
|
|
2565 u_char *atom_header, *atom_table, *atom_end;
|
|
2566 uint32_t entries;
|
|
2567 ngx_buf_t *atom, *data;
|
|
2568 ngx_mp4_stco_atom_t *stco_atom;
|
|
2569 ngx_http_mp4_trak_t *trak;
|
|
2570
|
|
2571 /* chunk offsets atom */
|
|
2572
|
|
2573 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
2574
|
|
2575 atom_header = ngx_mp4_atom_header(mp4);
|
|
2576 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
2577 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
2578
|
|
2579 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
2580
|
|
2581 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
2582
|
|
2583 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
2584 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
2585
|
|
2586 if ((uint64_t) (atom_end - stco_atom->version) > atom_data_size) {
|
|
2587 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2588 "\"%s\" mp4 stco atom too large", mp4->file.name.data);
|
|
2589 return NGX_ERROR;
|
|
2590 }
|
|
2591
|
|
2592 trak = ngx_mp4_last_trak(mp4);
|
|
2593 trak->chunks = entries;
|
|
2594
|
640
|
2595 atom = &trak->stco_atom_buf;
|
638
|
2596 atom->temporary = 1;
|
|
2597 atom->pos = atom_header;
|
|
2598 atom->last = atom_table;
|
|
2599
|
640
|
2600 data = &trak->stco_data_buf;
|
638
|
2601 data->temporary = 1;
|
|
2602 data->pos = atom_table;
|
|
2603 data->last = atom_end;
|
|
2604
|
|
2605 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
2606 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
2607
|
|
2608 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2609
|
|
2610 return NGX_OK;
|
|
2611 }
|
|
2612
|
|
2613
|
|
2614 static ngx_int_t
|
|
2615 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
2616 ngx_http_mp4_trak_t *trak)
|
|
2617 {
|
|
2618 size_t atom_size;
|
|
2619 ngx_buf_t *atom, *data;
|
|
2620 ngx_mp4_stco_atom_t *stco_atom;
|
|
2621
|
|
2622 /*
|
|
2623 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
2624 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
2625 * atom which may reside after mdia.minf
|
|
2626 */
|
|
2627
|
|
2628 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2629 "mp4 stco atom update");
|
|
2630
|
|
2631 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
2632
|
|
2633 if (data == NULL) {
|
|
2634 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2635 "no mp4 stco atoms were found in \"%s\"",
|
|
2636 mp4->file.name.data);
|
|
2637 return NGX_ERROR;
|
|
2638 }
|
|
2639
|
|
2640 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
2641 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
2642 trak->size += atom_size;
|
|
2643
|
|
2644 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
2645 trak->start_offset += trak->chunk_samples_size;
|
|
2646 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
2647
|
|
2648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2649 "start chunk offset:%uD", trak->start_offset);
|
|
2650
|
|
2651 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
2652 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
2653
|
|
2654 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
2655 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
2656
|
|
2657 return NGX_OK;
|
|
2658 }
|
|
2659
|
|
2660
|
|
2661 static void
|
|
2662 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
2663 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
2664 {
|
|
2665 uint32_t offset, *entry, *end;
|
|
2666 ngx_buf_t *data;
|
|
2667
|
|
2668 /*
|
|
2669 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
2670 * minimal start offset of all traks and new moov atom size
|
|
2671 */
|
|
2672
|
|
2673 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2674 "mp4 stco atom adjustment");
|
|
2675
|
|
2676 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
2677 entry = (uint32_t *) data->pos;
|
|
2678 end = (uint32_t *) data->last;
|
|
2679
|
|
2680 while (entry < end) {
|
|
2681 offset = ngx_mp4_get_32value(entry);
|
|
2682 offset += adjustment;
|
|
2683 ngx_mp4_set_32value(entry, offset);
|
|
2684 entry++;
|
|
2685 }
|
|
2686 }
|
|
2687
|
|
2688
|
640
|
2689 typedef struct {
|
|
2690 u_char size[4];
|
|
2691 u_char name[4];
|
|
2692 u_char version[1];
|
|
2693 u_char flags[3];
|
|
2694 u_char entries[4];
|
|
2695 } ngx_mp4_co64_atom_t;
|
|
2696
|
|
2697
|
|
2698 static ngx_int_t
|
|
2699 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2700 {
|
|
2701 u_char *atom_header, *atom_table, *atom_end;
|
|
2702 uint32_t entries;
|
|
2703 ngx_buf_t *atom, *data;
|
|
2704 ngx_mp4_co64_atom_t *co64_atom;
|
|
2705 ngx_http_mp4_trak_t *trak;
|
|
2706
|
|
2707 /* chunk offsets atom */
|
|
2708
|
|
2709 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
2710
|
|
2711 atom_header = ngx_mp4_atom_header(mp4);
|
|
2712 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
2713 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
2714
|
|
2715 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
2716
|
|
2717 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
2718
|
|
2719 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
2720 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
2721
|
|
2722 if ((uint64_t) (atom_end - co64_atom->version) > atom_data_size) {
|
|
2723 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2724 "\"%s\" mp4 co64 atom too large", mp4->file.name.data);
|
|
2725 return NGX_ERROR;
|
|
2726 }
|
|
2727
|
|
2728 trak = ngx_mp4_last_trak(mp4);
|
|
2729 trak->chunks = entries;
|
|
2730
|
|
2731 atom = &trak->co64_atom_buf;
|
|
2732 atom->temporary = 1;
|
|
2733 atom->pos = atom_header;
|
|
2734 atom->last = atom_table;
|
|
2735
|
|
2736 data = &trak->co64_data_buf;
|
|
2737 data->temporary = 1;
|
|
2738 data->pos = atom_table;
|
|
2739 data->last = atom_end;
|
|
2740
|
|
2741 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
2742 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
2743
|
|
2744 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2745
|
|
2746 return NGX_OK;
|
|
2747 }
|
|
2748
|
|
2749
|
|
2750 static ngx_int_t
|
|
2751 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
2752 ngx_http_mp4_trak_t *trak)
|
|
2753 {
|
|
2754 size_t atom_size;
|
|
2755 ngx_buf_t *atom, *data;
|
|
2756 ngx_mp4_co64_atom_t *co64_atom;
|
|
2757
|
|
2758 /*
|
|
2759 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
2760 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
2761 * atom which may reside after mdia.minf
|
|
2762 */
|
|
2763
|
|
2764 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2765 "mp4 co64 atom update");
|
|
2766
|
|
2767 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
2768
|
|
2769 if (data == NULL) {
|
|
2770 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2771 "no mp4 co64 atoms were found in \"%s\"",
|
|
2772 mp4->file.name.data);
|
|
2773 return NGX_ERROR;
|
|
2774 }
|
|
2775
|
|
2776 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
2777 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
2778 trak->size += atom_size;
|
|
2779
|
|
2780 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
2781 trak->start_offset += trak->chunk_samples_size;
|
|
2782 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
2783
|
|
2784 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2785 "start chunk offset:%uL", trak->start_offset);
|
|
2786
|
|
2787 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
2788 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
2789
|
|
2790 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
2791 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
2792
|
|
2793 return NGX_OK;
|
|
2794 }
|
|
2795
|
|
2796
|
|
2797 static void
|
|
2798 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
2799 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
2800 {
|
|
2801 uint64_t offset, *entry, *end;
|
|
2802 ngx_buf_t *data;
|
|
2803
|
|
2804 /*
|
|
2805 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
2806 * minimal start offset of all traks and new moov atom size
|
|
2807 */
|
|
2808
|
|
2809 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2810 "mp4 co64 atom adjustment");
|
|
2811
|
|
2812 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
2813 entry = (uint64_t *) data->pos;
|
|
2814 end = (uint64_t *) data->last;
|
|
2815
|
|
2816 while (entry < end) {
|
|
2817 offset = ngx_mp4_get_64value(entry);
|
|
2818 offset += adjustment;
|
|
2819 ngx_mp4_set_64value(entry, offset);
|
|
2820 entry++;
|
|
2821 }
|
|
2822 }
|
|
2823
|
|
2824
|
638
|
2825 static char *
|
|
2826 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
2827 {
|
|
2828 ngx_http_core_loc_conf_t *clcf;
|
|
2829
|
|
2830 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
2831 clcf->handler = ngx_http_mp4_handler;
|
|
2832
|
|
2833 return NGX_CONF_OK;
|
|
2834 }
|
|
2835
|
|
2836
|
|
2837 static void *
|
|
2838 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
2839 {
|
|
2840 ngx_http_mp4_conf_t *conf;
|
|
2841
|
|
2842 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
2843 if (conf == NULL) {
|
|
2844 return NULL;
|
|
2845 }
|
|
2846
|
|
2847 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
2848 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
2849
|
|
2850 return conf;
|
|
2851 }
|
|
2852
|
|
2853
|
|
2854 static char *
|
|
2855 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
2856 {
|
|
2857 ngx_http_mp4_conf_t *prev = parent;
|
|
2858 ngx_http_mp4_conf_t *conf = child;
|
|
2859
|
|
2860 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
2861 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
2862 10 * 1024 * 1024);
|
|
2863
|
|
2864 return NGX_CONF_OK;
|
|
2865 }
|