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
|
670
|
159 #define ngx_mp4_atom_data_size(t) (uint64_t) (sizeof(t) - 8)
|
638
|
160 #define ngx_mp4_atom_next(mp4, n) mp4->buffer_pos += n; mp4->offset += n
|
|
161
|
|
162
|
|
163 #define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \
|
|
164 ((u_char *) (p))[4] = n1; \
|
|
165 ((u_char *) (p))[5] = n2; \
|
|
166 ((u_char *) (p))[6] = n3; \
|
|
167 ((u_char *) (p))[7] = n4
|
|
168
|
|
169 #define ngx_mp4_get_32value(p) \
|
658
|
170 ( ((uint32_t) ((u_char *) (p))[0] << 24) \
|
|
171 + ( ((u_char *) (p))[1] << 16) \
|
|
172 + ( ((u_char *) (p))[2] << 8) \
|
|
173 + ( ((u_char *) (p))[3]) )
|
638
|
174
|
|
175 #define ngx_mp4_set_32value(p, n) \
|
|
176 ((u_char *) (p))[0] = (u_char) ((n) >> 24); \
|
|
177 ((u_char *) (p))[1] = (u_char) ((n) >> 16); \
|
|
178 ((u_char *) (p))[2] = (u_char) ((n) >> 8); \
|
|
179 ((u_char *) (p))[3] = (u_char) (n)
|
|
180
|
|
181 #define ngx_mp4_get_64value(p) \
|
|
182 ( ((uint64_t) ((u_char *) (p))[0] << 56) \
|
|
183 + ((uint64_t) ((u_char *) (p))[1] << 48) \
|
|
184 + ((uint64_t) ((u_char *) (p))[2] << 40) \
|
|
185 + ((uint64_t) ((u_char *) (p))[3] << 32) \
|
|
186 + ((uint64_t) ((u_char *) (p))[4] << 24) \
|
|
187 + ( ((u_char *) (p))[5] << 16) \
|
|
188 + ( ((u_char *) (p))[6] << 8) \
|
|
189 + ( ((u_char *) (p))[7]) )
|
|
190
|
|
191 #define ngx_mp4_set_64value(p, n) \
|
642
|
192 ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \
|
|
193 ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \
|
|
194 ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \
|
|
195 ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \
|
|
196 ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \
|
|
197 ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \
|
|
198 ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \
|
|
199 ((u_char *) (p))[7] = (u_char) (n)
|
638
|
200
|
|
201 #define ngx_mp4_last_trak(mp4) \
|
|
202 &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1]
|
|
203
|
|
204
|
|
205 static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4);
|
|
206 static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
207 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size);
|
670
|
208 static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size);
|
638
|
209 static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4,
|
|
210 uint64_t atom_data_size);
|
|
211 static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4,
|
|
212 uint64_t atom_data_size);
|
|
213 static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4,
|
|
214 uint64_t atom_data_size);
|
|
215 static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4,
|
|
216 off_t start_offset);
|
|
217 static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4,
|
|
218 uint64_t atom_data_size);
|
|
219 static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
220 uint64_t atom_data_size);
|
|
221 static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
222 ngx_http_mp4_trak_t *trak);
|
|
223 static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4,
|
|
224 uint64_t atom_data_size);
|
|
225 static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4,
|
|
226 uint64_t atom_data_size);
|
|
227 static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
228 uint64_t atom_data_size);
|
|
229 static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
230 ngx_http_mp4_trak_t *trak);
|
|
231 static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4,
|
|
232 uint64_t atom_data_size);
|
|
233 static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4,
|
|
234 uint64_t atom_data_size);
|
|
235 static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
236 uint64_t atom_data_size);
|
|
237 static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
238 ngx_http_mp4_trak_t *trak);
|
|
239 static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4,
|
|
240 uint64_t atom_data_size);
|
|
241 static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4,
|
|
242 uint64_t atom_data_size);
|
|
243 static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4,
|
|
244 uint64_t atom_data_size);
|
|
245 static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
246 uint64_t atom_data_size);
|
|
247 static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
248 ngx_http_mp4_trak_t *trak);
|
|
249 static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4,
|
|
250 uint64_t atom_data_size);
|
|
251 static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
252 uint64_t atom_data_size);
|
|
253 static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
254 ngx_http_mp4_trak_t *trak);
|
|
255 static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
256 uint64_t atom_data_size);
|
|
257 static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
258 ngx_http_mp4_trak_t *trak);
|
|
259 static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
260 uint64_t atom_data_size);
|
|
261 static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
262 ngx_http_mp4_trak_t *trak);
|
|
263 static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
264 uint64_t atom_data_size);
|
|
265 static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
266 ngx_http_mp4_trak_t *trak);
|
|
267 static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
268 uint64_t atom_data_size);
|
670
|
269 static ngx_int_t ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
638
|
270 ngx_http_mp4_trak_t *trak);
|
|
271 static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
272 uint64_t atom_data_size);
|
|
273 static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
274 ngx_http_mp4_trak_t *trak);
|
|
275 static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
276 ngx_http_mp4_trak_t *trak, int32_t adjustment);
|
640
|
277 static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
278 uint64_t atom_data_size);
|
|
279 static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
280 ngx_http_mp4_trak_t *trak);
|
|
281 static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
282 ngx_http_mp4_trak_t *trak, off_t adjustment);
|
638
|
283 static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
284 static void *ngx_http_mp4_create_conf(ngx_conf_t *cf);
|
|
285 static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child);
|
|
286
|
|
287 static ngx_command_t ngx_http_mp4_commands[] = {
|
|
288
|
|
289 { ngx_string("mp4"),
|
|
290 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
|
|
291 ngx_http_mp4,
|
|
292 0,
|
|
293 0,
|
|
294 NULL },
|
|
295
|
|
296 { ngx_string("mp4_buffer_size"),
|
|
297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
298 ngx_conf_set_size_slot,
|
|
299 NGX_HTTP_LOC_CONF_OFFSET,
|
|
300 offsetof(ngx_http_mp4_conf_t, buffer_size),
|
|
301 NULL },
|
|
302
|
|
303 { ngx_string("mp4_max_buffer_size"),
|
|
304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
305 ngx_conf_set_size_slot,
|
|
306 NGX_HTTP_LOC_CONF_OFFSET,
|
|
307 offsetof(ngx_http_mp4_conf_t, max_buffer_size),
|
|
308 NULL },
|
|
309
|
|
310 ngx_null_command
|
|
311 };
|
|
312
|
|
313
|
|
314 static ngx_http_module_t ngx_http_mp4_module_ctx = {
|
|
315 NULL, /* preconfiguration */
|
|
316 NULL, /* postconfiguration */
|
|
317
|
|
318 NULL, /* create main configuration */
|
|
319 NULL, /* init main configuration */
|
|
320
|
|
321 NULL, /* create server configuration */
|
|
322 NULL, /* merge server configuration */
|
|
323
|
|
324 ngx_http_mp4_create_conf, /* create location configuration */
|
|
325 ngx_http_mp4_merge_conf /* merge location configuration */
|
|
326 };
|
|
327
|
|
328
|
|
329 ngx_module_t ngx_http_mp4_module = {
|
|
330 NGX_MODULE_V1,
|
|
331 &ngx_http_mp4_module_ctx, /* module context */
|
|
332 ngx_http_mp4_commands, /* module directives */
|
|
333 NGX_HTTP_MODULE, /* module type */
|
|
334 NULL, /* init master */
|
|
335 NULL, /* init module */
|
|
336 NULL, /* init process */
|
|
337 NULL, /* init thread */
|
|
338 NULL, /* exit thread */
|
|
339 NULL, /* exit process */
|
|
340 NULL, /* exit master */
|
|
341 NGX_MODULE_V1_PADDING
|
|
342 };
|
|
343
|
|
344
|
|
345 static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = {
|
|
346 { "ftyp", ngx_http_mp4_read_ftyp_atom },
|
|
347 { "moov", ngx_http_mp4_read_moov_atom },
|
|
348 { "mdat", ngx_http_mp4_read_mdat_atom },
|
|
349 { NULL, NULL }
|
|
350 };
|
|
351
|
|
352 static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = {
|
|
353 { "mvhd", ngx_http_mp4_read_mvhd_atom },
|
|
354 { "trak", ngx_http_mp4_read_trak_atom },
|
|
355 { "cmov", ngx_http_mp4_read_cmov_atom },
|
|
356 { NULL, NULL }
|
|
357 };
|
|
358
|
|
359 static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = {
|
|
360 { "tkhd", ngx_http_mp4_read_tkhd_atom },
|
|
361 { "mdia", ngx_http_mp4_read_mdia_atom },
|
|
362 { NULL, NULL }
|
|
363 };
|
|
364
|
|
365 static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = {
|
|
366 { "mdhd", ngx_http_mp4_read_mdhd_atom },
|
|
367 { "hdlr", ngx_http_mp4_read_hdlr_atom },
|
|
368 { "minf", ngx_http_mp4_read_minf_atom },
|
|
369 { NULL, NULL }
|
|
370 };
|
|
371
|
|
372 static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = {
|
|
373 { "vmhd", ngx_http_mp4_read_vmhd_atom },
|
|
374 { "smhd", ngx_http_mp4_read_smhd_atom },
|
|
375 { "dinf", ngx_http_mp4_read_dinf_atom },
|
|
376 { "stbl", ngx_http_mp4_read_stbl_atom },
|
|
377 { NULL, NULL }
|
|
378 };
|
|
379
|
|
380 static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = {
|
|
381 { "stsd", ngx_http_mp4_read_stsd_atom },
|
|
382 { "stts", ngx_http_mp4_read_stts_atom },
|
|
383 { "stss", ngx_http_mp4_read_stss_atom },
|
|
384 { "ctts", ngx_http_mp4_read_ctts_atom },
|
|
385 { "stsc", ngx_http_mp4_read_stsc_atom },
|
|
386 { "stsz", ngx_http_mp4_read_stsz_atom },
|
|
387 { "stco", ngx_http_mp4_read_stco_atom },
|
640
|
388 { "co64", ngx_http_mp4_read_co64_atom },
|
638
|
389 { NULL, NULL }
|
|
390 };
|
|
391
|
|
392
|
|
393 static ngx_int_t
|
|
394 ngx_http_mp4_handler(ngx_http_request_t *r)
|
|
395 {
|
|
396 u_char *last;
|
|
397 size_t root;
|
|
398 ngx_int_t rc, start;
|
|
399 ngx_uint_t level;
|
|
400 ngx_str_t path, value;
|
|
401 ngx_log_t *log;
|
|
402 ngx_buf_t *b;
|
|
403 ngx_chain_t out;
|
|
404 ngx_http_mp4_file_t *mp4;
|
|
405 ngx_open_file_info_t of;
|
|
406 ngx_http_core_loc_conf_t *clcf;
|
|
407
|
|
408 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
409 return NGX_HTTP_NOT_ALLOWED;
|
|
410 }
|
|
411
|
|
412 if (r->uri.data[r->uri.len - 1] == '/') {
|
|
413 return NGX_DECLINED;
|
|
414 }
|
|
415
|
|
416 rc = ngx_http_discard_request_body(r);
|
|
417
|
|
418 if (rc != NGX_OK) {
|
|
419 return rc;
|
|
420 }
|
|
421
|
|
422 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
423 if (last == NULL) {
|
|
424 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
425 }
|
|
426
|
|
427 log = r->connection->log;
|
|
428
|
|
429 path.len = last - path.data;
|
|
430
|
|
431 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
|
|
432 "http mp4 filename: \"%V\"", &path);
|
|
433
|
|
434 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
435
|
|
436 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
|
|
437
|
|
438 of.read_ahead = clcf->read_ahead;
|
|
439 of.directio = NGX_MAX_OFF_T_VALUE;
|
|
440 of.valid = clcf->open_file_cache_valid;
|
|
441 of.min_uses = clcf->open_file_cache_min_uses;
|
|
442 of.errors = clcf->open_file_cache_errors;
|
|
443 of.events = clcf->open_file_cache_events;
|
664
|
444
|
|
445 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
|
|
446 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
447 }
|
638
|
448
|
|
449 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
|
|
450 != NGX_OK)
|
|
451 {
|
|
452 switch (of.err) {
|
|
453
|
|
454 case 0:
|
|
455 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
456
|
|
457 case NGX_ENOENT:
|
|
458 case NGX_ENOTDIR:
|
|
459 case NGX_ENAMETOOLONG:
|
|
460
|
|
461 level = NGX_LOG_ERR;
|
|
462 rc = NGX_HTTP_NOT_FOUND;
|
|
463 break;
|
|
464
|
|
465 case NGX_EACCES:
|
662
|
466 #if (NGX_HAVE_OPENAT)
|
|
467 case NGX_EMLINK:
|
|
468 case NGX_ELOOP:
|
|
469 #endif
|
638
|
470
|
|
471 level = NGX_LOG_ERR;
|
|
472 rc = NGX_HTTP_FORBIDDEN;
|
|
473 break;
|
|
474
|
|
475 default:
|
|
476
|
|
477 level = NGX_LOG_CRIT;
|
|
478 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
479 break;
|
|
480 }
|
|
481
|
|
482 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
|
|
483 ngx_log_error(level, log, of.err,
|
|
484 "%s \"%s\" failed", of.failed, path.data);
|
|
485 }
|
|
486
|
|
487 return rc;
|
|
488 }
|
|
489
|
|
490 if (!of.is_file) {
|
|
491
|
|
492 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
|
|
493 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
494 ngx_close_file_n " \"%s\" failed", path.data);
|
|
495 }
|
|
496
|
|
497 return NGX_DECLINED;
|
|
498 }
|
|
499
|
|
500 r->root_tested = !r->error_page;
|
|
501 r->allow_ranges = 1;
|
|
502
|
|
503 start = -1;
|
|
504 r->headers_out.content_length_n = of.size;
|
|
505 mp4 = NULL;
|
|
506 b = NULL;
|
|
507
|
|
508 if (r->args.len) {
|
|
509
|
|
510 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
|
|
511
|
642
|
512 /*
|
|
513 * A Flash player may send start value with a lot of digits
|
|
514 * after dot so strtod() is used instead of atofp(). NaNs and
|
|
515 * infinities become negative numbers after (int) conversion.
|
|
516 */
|
|
517
|
|
518 ngx_set_errno(0);
|
|
519 start = (int) (strtod((char *) value.data, NULL) * 1000);
|
|
520
|
|
521 if (ngx_errno == 0 && start >= 0) {
|
638
|
522 r->allow_ranges = 0;
|
|
523
|
|
524 mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t));
|
|
525 if (mp4 == NULL) {
|
|
526 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
527 }
|
|
528
|
|
529 mp4->file.fd = of.fd;
|
|
530 mp4->file.name = path;
|
|
531 mp4->file.log = r->connection->log;;
|
|
532 mp4->end = of.size;
|
|
533 mp4->start = (ngx_uint_t) start;
|
|
534 mp4->request = r;
|
|
535
|
|
536 switch (ngx_http_mp4_process(mp4)) {
|
|
537
|
|
538 case NGX_DECLINED:
|
|
539 if (mp4->buffer) {
|
|
540 ngx_pfree(r->pool, mp4->buffer);
|
|
541 }
|
|
542
|
|
543 ngx_pfree(r->pool, mp4);
|
|
544 mp4 = NULL;
|
|
545
|
|
546 break;
|
|
547
|
|
548 case NGX_OK:
|
|
549 r->headers_out.content_length_n = mp4->content_length;
|
|
550 break;
|
|
551
|
|
552 default: /* NGX_ERROR */
|
|
553 if (mp4->buffer) {
|
|
554 ngx_pfree(r->pool, mp4->buffer);
|
|
555 }
|
|
556
|
|
557 ngx_pfree(r->pool, mp4);
|
|
558
|
|
559 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
560 }
|
|
561 }
|
|
562 }
|
|
563 }
|
|
564
|
|
565 log->action = "sending mp4 to client";
|
|
566
|
|
567 if (clcf->directio <= of.size) {
|
|
568
|
|
569 /*
|
|
570 * DIRECTIO is set on transfer only
|
|
571 * to allow kernel to cache "moov" atom
|
|
572 */
|
|
573
|
|
574 if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) {
|
|
575 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
576 ngx_directio_on_n " \"%s\" failed", path.data);
|
|
577 }
|
|
578
|
|
579 of.is_directio = 1;
|
|
580
|
|
581 if (mp4) {
|
|
582 mp4->file.directio = 1;
|
|
583 }
|
|
584 }
|
|
585
|
|
586 r->headers_out.status = NGX_HTTP_OK;
|
|
587 r->headers_out.last_modified_time = of.mtime;
|
|
588
|
|
589 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
590 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
591 }
|
|
592
|
|
593 if (mp4 == NULL) {
|
|
594 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
595 if (b == NULL) {
|
|
596 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
597 }
|
|
598
|
|
599 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
600 if (b->file == NULL) {
|
|
601 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
602 }
|
|
603 }
|
|
604
|
|
605 rc = ngx_http_send_header(r);
|
|
606
|
|
607 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
608 return rc;
|
|
609 }
|
|
610
|
|
611 if (mp4) {
|
|
612 return ngx_http_output_filter(r, mp4->out);
|
|
613 }
|
|
614
|
|
615 b->file_pos = 0;
|
|
616 b->file_last = of.size;
|
|
617
|
|
618 b->in_file = b->file_last ? 1 : 0;
|
|
619 b->last_buf = 1;
|
|
620 b->last_in_chain = 1;
|
|
621
|
|
622 b->file->fd = of.fd;
|
|
623 b->file->name = path;
|
|
624 b->file->log = log;
|
|
625 b->file->directio = of.is_directio;
|
|
626
|
|
627 out.buf = b;
|
|
628 out.next = NULL;
|
|
629
|
|
630 return ngx_http_output_filter(r, &out);
|
|
631 }
|
|
632
|
|
633
|
|
634 static ngx_int_t
|
|
635 ngx_http_mp4_process(ngx_http_mp4_file_t *mp4)
|
|
636 {
|
|
637 off_t start_offset, adjustment;
|
|
638 ngx_int_t rc;
|
|
639 ngx_uint_t i, j;
|
|
640 ngx_chain_t **prev;
|
|
641 ngx_http_mp4_trak_t *trak;
|
|
642 ngx_http_mp4_conf_t *conf;
|
|
643
|
|
644 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
645 "mp4 start:%ui", mp4->start);
|
|
646
|
|
647 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
648
|
|
649 mp4->buffer_size = conf->buffer_size;
|
|
650
|
|
651 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end);
|
|
652 if (rc != NGX_OK) {
|
|
653 return rc;
|
|
654 }
|
|
655
|
|
656 if (mp4->trak.nelts == 0) {
|
|
657 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
658 "no mp4 trak atoms were found in \"%s\"",
|
|
659 mp4->file.name.data);
|
|
660 return NGX_ERROR;
|
|
661 }
|
|
662
|
|
663 if (mp4->mdat_atom.buf == NULL) {
|
|
664 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
665 "no mp4 mdat atom was found in \"%s\"",
|
|
666 mp4->file.name.data);
|
|
667 return NGX_ERROR;
|
|
668 }
|
|
669
|
|
670 prev = &mp4->out;
|
|
671
|
|
672 if (mp4->ftyp_atom.buf) {
|
|
673 *prev = &mp4->ftyp_atom;
|
|
674 prev = &mp4->ftyp_atom.next;
|
|
675 }
|
|
676
|
|
677 *prev = &mp4->moov_atom;
|
|
678 prev = &mp4->moov_atom.next;
|
|
679
|
|
680 if (mp4->mvhd_atom.buf) {
|
|
681 mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos;
|
|
682 *prev = &mp4->mvhd_atom;
|
|
683 prev = &mp4->mvhd_atom.next;
|
|
684 }
|
|
685
|
|
686 start_offset = mp4->end;
|
|
687 trak = mp4->trak.elts;
|
|
688
|
|
689 for (i = 0; i < mp4->trak.nelts; i++) {
|
|
690
|
|
691 if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) {
|
|
692 return NGX_ERROR;
|
|
693 }
|
|
694
|
|
695 if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) {
|
|
696 return NGX_ERROR;
|
|
697 }
|
|
698
|
|
699 ngx_http_mp4_update_ctts_atom(mp4, &trak[i]);
|
|
700
|
|
701 if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) {
|
|
702 return NGX_ERROR;
|
|
703 }
|
|
704
|
670
|
705 if (ngx_http_mp4_update_stsz_atom(mp4, &trak[i]) != NGX_OK) {
|
|
706 return NGX_ERROR;
|
|
707 }
|
638
|
708
|
640
|
709 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
710 if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) {
|
|
711 return NGX_ERROR;
|
|
712 }
|
|
713
|
|
714 } else {
|
|
715 if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) {
|
|
716 return NGX_ERROR;
|
|
717 }
|
638
|
718 }
|
|
719
|
|
720 ngx_http_mp4_update_stbl_atom(mp4, &trak[i]);
|
|
721 ngx_http_mp4_update_minf_atom(mp4, &trak[i]);
|
|
722 trak[i].size += trak[i].mdhd_size;
|
|
723 trak[i].size += trak[i].hdlr_size;
|
|
724 ngx_http_mp4_update_mdia_atom(mp4, &trak[i]);
|
|
725 trak[i].size += trak[i].tkhd_size;
|
|
726 ngx_http_mp4_update_trak_atom(mp4, &trak[i]);
|
|
727
|
|
728 mp4->moov_size += trak[i].size;
|
|
729
|
|
730 if (start_offset > trak[i].start_offset) {
|
|
731 start_offset = trak[i].start_offset;
|
|
732 }
|
|
733
|
|
734 *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM];
|
|
735 prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next;
|
|
736
|
|
737 for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) {
|
|
738 if (trak[i].out[j].buf) {
|
|
739 *prev = &trak[i].out[j];
|
|
740 prev = &trak[i].out[j].next;
|
|
741 }
|
|
742 }
|
|
743 }
|
|
744
|
|
745 mp4->moov_size += 8;
|
|
746
|
|
747 ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size);
|
|
748 ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v');
|
|
749 mp4->content_length += mp4->moov_size;
|
|
750
|
|
751 *prev = &mp4->mdat_atom;
|
|
752
|
|
753 adjustment = mp4->ftyp_size + mp4->moov_size
|
|
754 + ngx_http_mp4_update_mdat_atom(mp4, start_offset)
|
|
755 - start_offset;
|
|
756
|
|
757 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
670
|
758 "mp4 adjustment:%O", adjustment);
|
638
|
759
|
|
760 for (i = 0; i < mp4->trak.nelts; i++) {
|
640
|
761 if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) {
|
|
762 ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment);
|
|
763 } else {
|
|
764 ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment);
|
|
765 }
|
638
|
766 }
|
|
767
|
|
768 return NGX_OK;
|
|
769 }
|
|
770
|
|
771
|
|
772 typedef struct {
|
|
773 u_char size[4];
|
|
774 u_char name[4];
|
|
775 } ngx_mp4_atom_header_t;
|
|
776
|
|
777 typedef struct {
|
|
778 u_char size[4];
|
|
779 u_char name[4];
|
|
780 u_char size64[8];
|
|
781 } ngx_mp4_atom_header64_t;
|
|
782
|
|
783
|
|
784 static ngx_int_t
|
|
785 ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4,
|
|
786 ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size)
|
|
787 {
|
|
788 off_t end;
|
|
789 size_t atom_header_size;
|
|
790 u_char *atom_header, *atom_name;
|
|
791 uint64_t atom_size;
|
|
792 ngx_int_t rc;
|
|
793 ngx_uint_t n;
|
|
794
|
|
795 end = mp4->offset + atom_data_size;
|
|
796
|
|
797 while (mp4->offset < end) {
|
|
798
|
670
|
799 if (ngx_http_mp4_read(mp4, sizeof(uint32_t)) != NGX_OK) {
|
|
800 return NGX_ERROR;
|
638
|
801 }
|
|
802
|
|
803 atom_header = mp4->buffer_pos;
|
|
804 atom_size = ngx_mp4_get_32value(atom_header);
|
|
805 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
806
|
|
807 if (atom_size == 0) {
|
|
808 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
809 "mp4 atom end");
|
|
810 return NGX_OK;
|
|
811 }
|
|
812
|
|
813 if (atom_size < sizeof(ngx_mp4_atom_header_t)) {
|
|
814
|
|
815 if (atom_size == 1) {
|
|
816
|
670
|
817 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header64_t))
|
|
818 != NGX_OK)
|
638
|
819 {
|
670
|
820 return NGX_ERROR;
|
638
|
821 }
|
|
822
|
|
823 /* 64-bit atom size */
|
670
|
824 atom_header = mp4->buffer_pos;
|
638
|
825 atom_size = ngx_mp4_get_64value(atom_header + 8);
|
|
826 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
827
|
|
828 } else {
|
|
829 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
830 "\"%s\" mp4 atom is too small:%uL",
|
|
831 mp4->file.name.data, atom_size);
|
|
832 return NGX_ERROR;
|
|
833 }
|
|
834 }
|
|
835
|
670
|
836 if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header_t)) != NGX_OK) {
|
|
837 return NGX_ERROR;
|
638
|
838 }
|
|
839
|
670
|
840 atom_header = mp4->buffer_pos;
|
638
|
841 atom_name = atom_header + sizeof(uint32_t);
|
|
842
|
|
843 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
844 "mp4 atom: %*s @%O:%uL",
|
|
845 4, atom_name, mp4->offset, atom_size);
|
|
846
|
670
|
847 if (atom_size > (uint64_t) (NGX_MAX_OFF_T_VALUE - mp4->offset)
|
|
848 || mp4->offset + (off_t) atom_size > end)
|
|
849 {
|
|
850 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
851 "\"%s\" mp4 atom too large:%uL",
|
|
852 mp4->file.name.data, atom_size);
|
|
853 return NGX_ERROR;
|
|
854 }
|
|
855
|
638
|
856 for (n = 0; atom[n].name; n++) {
|
|
857
|
|
858 if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) {
|
|
859
|
|
860 ngx_mp4_atom_next(mp4, atom_header_size);
|
|
861
|
|
862 rc = atom[n].handler(mp4, atom_size - atom_header_size);
|
|
863 if (rc != NGX_OK) {
|
|
864 return rc;
|
|
865 }
|
|
866
|
|
867 goto next;
|
|
868 }
|
|
869 }
|
|
870
|
|
871 ngx_mp4_atom_next(mp4, atom_size);
|
|
872
|
|
873 next:
|
|
874 continue;
|
|
875 }
|
|
876
|
|
877 return NGX_OK;
|
|
878 }
|
|
879
|
|
880
|
|
881 static ngx_int_t
|
670
|
882 ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size)
|
638
|
883 {
|
670
|
884 ssize_t n;
|
|
885
|
|
886 if (mp4->buffer_pos + size <= mp4->buffer_end) {
|
|
887 return NGX_OK;
|
|
888 }
|
638
|
889
|
|
890 if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) {
|
|
891 mp4->buffer_size = (size_t) (mp4->end - mp4->offset);
|
|
892 }
|
|
893
|
670
|
894 if (mp4->buffer_size < size) {
|
|
895 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
896 "\"%s\" mp4 file truncated", mp4->file.name.data);
|
|
897 return NGX_ERROR;
|
|
898 }
|
|
899
|
638
|
900 if (mp4->buffer == NULL) {
|
|
901 mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size);
|
|
902 if (mp4->buffer == NULL) {
|
|
903 return NGX_ERROR;
|
|
904 }
|
|
905
|
|
906 mp4->buffer_start = mp4->buffer;
|
|
907 }
|
|
908
|
|
909 n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size,
|
|
910 mp4->offset);
|
|
911
|
|
912 if (n == NGX_ERROR) {
|
|
913 return NGX_ERROR;
|
|
914 }
|
|
915
|
670
|
916 if ((size_t) n != mp4->buffer_size) {
|
|
917 ngx_log_error(NGX_LOG_CRIT, mp4->file.log, 0,
|
|
918 ngx_read_file_n " read only %z of %z from \"%s\"",
|
|
919 n, mp4->buffer_size, mp4->file.name.data);
|
|
920 return NGX_ERROR;
|
638
|
921 }
|
|
922
|
|
923 mp4->buffer_pos = mp4->buffer_start;
|
670
|
924 mp4->buffer_end = mp4->buffer_start + mp4->buffer_size;
|
638
|
925
|
|
926 return NGX_OK;
|
|
927 }
|
|
928
|
|
929
|
|
930 static ngx_int_t
|
|
931 ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
932 {
|
|
933 u_char *ftyp_atom;
|
|
934 size_t atom_size;
|
|
935 ngx_buf_t *atom;
|
|
936
|
|
937 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom");
|
|
938
|
670
|
939 if (atom_data_size > 1024
|
|
940 || ngx_mp4_atom_data(mp4) + atom_data_size > mp4->buffer_end)
|
|
941 {
|
638
|
942 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
943 "\"%s\" mp4 ftyp atom is too large:%uL",
|
|
944 mp4->file.name.data, atom_data_size);
|
|
945 return NGX_ERROR;
|
|
946 }
|
|
947
|
|
948 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
949
|
|
950 ftyp_atom = ngx_palloc(mp4->request->pool, atom_size);
|
|
951 if (ftyp_atom == NULL) {
|
|
952 return NGX_ERROR;
|
|
953 }
|
|
954
|
|
955 ngx_mp4_set_32value(ftyp_atom, atom_size);
|
|
956 ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p');
|
|
957
|
|
958 /*
|
|
959 * only moov atom content is guaranteed to be in mp4->buffer
|
|
960 * during sending response, so ftyp atom content should be copied
|
|
961 */
|
|
962 ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t),
|
|
963 ngx_mp4_atom_data(mp4), (size_t) atom_data_size);
|
|
964
|
|
965 atom = &mp4->ftyp_atom_buf;
|
|
966 atom->temporary = 1;
|
|
967 atom->pos = ftyp_atom;
|
|
968 atom->last = ftyp_atom + atom_size;
|
|
969
|
|
970 mp4->ftyp_atom.buf = atom;
|
|
971 mp4->ftyp_size = atom_size;
|
|
972 mp4->content_length = atom_size;
|
|
973
|
|
974 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
975
|
|
976 return NGX_OK;
|
|
977 }
|
|
978
|
|
979
|
|
980 /*
|
|
981 * Small excess buffer to process atoms after moov atom, mp4->buffer_start
|
|
982 * will be set to this buffer part after moov atom processing.
|
|
983 */
|
|
984 #define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024)
|
|
985
|
|
986 static ngx_int_t
|
|
987 ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
988 {
|
|
989 ngx_int_t rc;
|
|
990 ngx_uint_t no_mdat;
|
|
991 ngx_buf_t *atom;
|
|
992 ngx_http_mp4_conf_t *conf;
|
|
993
|
|
994 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom");
|
|
995
|
|
996 no_mdat = (mp4->mdat_atom.buf == NULL);
|
|
997
|
|
998 if (no_mdat && mp4->start == 0) {
|
|
999 /*
|
|
1000 * send original file if moov atom resides before
|
|
1001 * mdat atom and client requests integral file
|
|
1002 */
|
|
1003 return NGX_DECLINED;
|
|
1004 }
|
|
1005
|
|
1006 conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module);
|
|
1007
|
|
1008 if (atom_data_size > mp4->buffer_size) {
|
|
1009
|
|
1010 if (atom_data_size > conf->max_buffer_size) {
|
|
1011 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1012 "\"%s\" mp4 moov atom is too large:%uL, "
|
|
1013 "you may want to increase mp4_max_buffer_size",
|
|
1014 mp4->file.name.data, atom_data_size);
|
|
1015 return NGX_ERROR;
|
|
1016 }
|
|
1017
|
|
1018 ngx_pfree(mp4->request->pool, mp4->buffer);
|
|
1019 mp4->buffer = NULL;
|
|
1020 mp4->buffer_pos = NULL;
|
|
1021 mp4->buffer_end = NULL;
|
|
1022
|
|
1023 mp4->buffer_size = (size_t) atom_data_size
|
|
1024 + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat;
|
|
1025 }
|
|
1026
|
|
1027 mp4->trak.elts = &mp4->traks;
|
|
1028 mp4->trak.size = sizeof(ngx_http_mp4_trak_t);
|
|
1029 mp4->trak.nalloc = 2;
|
|
1030 mp4->trak.pool = mp4->request->pool;
|
|
1031
|
|
1032 atom = &mp4->moov_atom_buf;
|
|
1033 atom->temporary = 1;
|
|
1034 atom->pos = mp4->moov_atom_header;
|
|
1035 atom->last = mp4->moov_atom_header + 8;
|
|
1036
|
|
1037 mp4->moov_atom.buf = &mp4->moov_atom_buf;
|
|
1038
|
|
1039 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size);
|
|
1040
|
|
1041 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done");
|
|
1042
|
|
1043 if (no_mdat) {
|
|
1044 mp4->buffer_start = mp4->buffer_pos;
|
|
1045 mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS;
|
|
1046
|
|
1047 } else {
|
|
1048 /* skip atoms after moov atom */
|
|
1049 mp4->offset = mp4->end;
|
|
1050 }
|
|
1051
|
|
1052 return rc;
|
|
1053 }
|
|
1054
|
|
1055
|
|
1056 static ngx_int_t
|
|
1057 ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1058 {
|
|
1059 ngx_buf_t *data;
|
|
1060
|
|
1061 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom");
|
|
1062
|
|
1063 data = &mp4->mdat_data_buf;
|
|
1064 data->file = &mp4->file;
|
|
1065 data->in_file = 1;
|
|
1066 data->last_buf = 1;
|
|
1067 data->last_in_chain = 1;
|
|
1068 data->file_last = mp4->offset + atom_data_size;
|
|
1069
|
|
1070 mp4->mdat_atom.buf = &mp4->mdat_atom_buf;
|
|
1071 mp4->mdat_atom.next = &mp4->mdat_data;
|
|
1072 mp4->mdat_data.buf = data;
|
|
1073
|
|
1074 if (mp4->trak.nelts) {
|
|
1075 /* skip atoms after mdat atom */
|
|
1076 mp4->offset = mp4->end;
|
|
1077
|
|
1078 } else {
|
|
1079 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1080 }
|
|
1081
|
|
1082 return NGX_OK;
|
|
1083 }
|
|
1084
|
|
1085
|
|
1086 static size_t
|
|
1087 ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset)
|
|
1088 {
|
|
1089 off_t atom_data_size;
|
|
1090 u_char *atom_header;
|
|
1091 uint32_t atom_header_size;
|
|
1092 uint64_t atom_size;
|
|
1093 ngx_buf_t *atom;
|
|
1094
|
|
1095 atom_data_size = mp4->mdat_data.buf->file_last - start_offset;
|
|
1096 mp4->mdat_data.buf->file_pos = start_offset;
|
|
1097
|
|
1098 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1099 "mdat new offset @%O:%O", start_offset, atom_data_size);
|
|
1100
|
|
1101 atom_header = mp4->mdat_atom_header;
|
|
1102
|
642
|
1103 if ((uint64_t) atom_data_size > 0xffffffff) {
|
638
|
1104 atom_size = 1;
|
|
1105 atom_header_size = sizeof(ngx_mp4_atom_header64_t);
|
|
1106 ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
|
|
1107 sizeof(ngx_mp4_atom_header64_t) + atom_data_size);
|
|
1108 } else {
|
|
1109 atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size;
|
|
1110 atom_header_size = sizeof(ngx_mp4_atom_header_t);
|
|
1111 }
|
|
1112
|
648
|
1113 mp4->content_length += atom_header_size + atom_data_size;
|
|
1114
|
638
|
1115 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1116 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't');
|
|
1117
|
|
1118 atom = &mp4->mdat_atom_buf;
|
|
1119 atom->temporary = 1;
|
|
1120 atom->pos = atom_header;
|
|
1121 atom->last = atom_header + atom_header_size;
|
|
1122
|
|
1123 return atom_header_size;
|
|
1124 }
|
|
1125
|
|
1126
|
|
1127 typedef struct {
|
|
1128 u_char size[4];
|
|
1129 u_char name[4];
|
|
1130 u_char version[1];
|
|
1131 u_char flags[3];
|
|
1132 u_char creation_time[4];
|
|
1133 u_char modification_time[4];
|
|
1134 u_char timescale[4];
|
|
1135 u_char duration[4];
|
|
1136 u_char rate[4];
|
|
1137 u_char volume[2];
|
|
1138 u_char reserved[10];
|
|
1139 u_char matrix[36];
|
|
1140 u_char preview_time[4];
|
|
1141 u_char preview_duration[4];
|
|
1142 u_char poster_time[4];
|
|
1143 u_char selection_time[4];
|
|
1144 u_char selection_duration[4];
|
|
1145 u_char current_time[4];
|
|
1146 u_char next_track_id[4];
|
|
1147 } ngx_mp4_mvhd_atom_t;
|
|
1148
|
|
1149 typedef struct {
|
|
1150 u_char size[4];
|
|
1151 u_char name[4];
|
|
1152 u_char version[1];
|
|
1153 u_char flags[3];
|
|
1154 u_char creation_time[8];
|
|
1155 u_char modification_time[8];
|
|
1156 u_char timescale[4];
|
|
1157 u_char duration[8];
|
|
1158 u_char rate[4];
|
|
1159 u_char volume[2];
|
|
1160 u_char reserved[10];
|
|
1161 u_char matrix[36];
|
|
1162 u_char preview_time[4];
|
|
1163 u_char preview_duration[4];
|
|
1164 u_char poster_time[4];
|
|
1165 u_char selection_time[4];
|
|
1166 u_char selection_duration[4];
|
|
1167 u_char current_time[4];
|
|
1168 u_char next_track_id[4];
|
|
1169 } ngx_mp4_mvhd64_atom_t;
|
|
1170
|
|
1171
|
|
1172 static ngx_int_t
|
|
1173 ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1174 {
|
|
1175 u_char *atom_header;
|
|
1176 size_t atom_size;
|
|
1177 uint32_t timescale;
|
|
1178 uint64_t duration;
|
|
1179 ngx_buf_t *atom;
|
|
1180 ngx_mp4_mvhd_atom_t *mvhd_atom;
|
|
1181 ngx_mp4_mvhd64_atom_t *mvhd64_atom;
|
|
1182
|
|
1183 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom");
|
|
1184
|
|
1185 atom_header = ngx_mp4_atom_header(mp4);
|
|
1186 mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header;
|
|
1187 mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header;
|
|
1188 ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd');
|
|
1189
|
670
|
1190 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd_atom_t) > atom_data_size) {
|
|
1191 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1192 "\"%s\" mp4 mvhd atom too small", mp4->file.name.data);
|
|
1193 return NGX_ERROR;
|
|
1194 }
|
|
1195
|
638
|
1196 if (mvhd_atom->version[0] == 0) {
|
|
1197 /* version 0: 32-bit duration */
|
|
1198 timescale = ngx_mp4_get_32value(mvhd_atom->timescale);
|
|
1199 duration = ngx_mp4_get_32value(mvhd_atom->duration);
|
|
1200
|
|
1201 } else {
|
|
1202 /* version 1: 64-bit duration */
|
670
|
1203
|
|
1204 if (ngx_mp4_atom_data_size(ngx_mp4_mvhd64_atom_t) > atom_data_size) {
|
|
1205 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1206 "\"%s\" mp4 mvhd atom too small",
|
|
1207 mp4->file.name.data);
|
|
1208 return NGX_ERROR;
|
|
1209 }
|
|
1210
|
638
|
1211 timescale = ngx_mp4_get_32value(mvhd64_atom->timescale);
|
|
1212 duration = ngx_mp4_get_64value(mvhd64_atom->duration);
|
|
1213 }
|
|
1214
|
|
1215 mp4->timescale = timescale;
|
|
1216
|
|
1217 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1218 "mvhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
1219 timescale, duration, (double) duration / timescale);
|
|
1220
|
|
1221 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
1222
|
|
1223 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1224 "mvhd new duration:%uL, time:%.3fs",
|
|
1225 duration, (double) duration / timescale);
|
|
1226
|
|
1227 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1228 ngx_mp4_set_32value(mvhd_atom->size, atom_size);
|
|
1229
|
|
1230 if (mvhd_atom->version[0] == 0) {
|
|
1231 ngx_mp4_set_32value(mvhd_atom->duration, duration);
|
|
1232
|
|
1233 } else {
|
|
1234 ngx_mp4_set_64value(mvhd64_atom->duration, duration);
|
|
1235 }
|
|
1236
|
|
1237 atom = &mp4->mvhd_atom_buf;
|
|
1238 atom->temporary = 1;
|
|
1239 atom->pos = atom_header;
|
|
1240 atom->last = atom_header + atom_size;
|
|
1241
|
|
1242 mp4->mvhd_atom.buf = atom;
|
|
1243
|
|
1244 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1245
|
|
1246 return NGX_OK;
|
|
1247 }
|
|
1248
|
|
1249
|
|
1250 static ngx_int_t
|
|
1251 ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1252 {
|
|
1253 u_char *atom_header, *atom_end;
|
|
1254 off_t atom_file_end;
|
|
1255 ngx_int_t rc;
|
|
1256 ngx_buf_t *atom;
|
|
1257 ngx_http_mp4_trak_t *trak;
|
|
1258
|
|
1259 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom");
|
|
1260
|
|
1261 trak = ngx_array_push(&mp4->trak);
|
|
1262 if (trak == NULL) {
|
|
1263 return NGX_ERROR;
|
|
1264 }
|
|
1265
|
|
1266 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
1267
|
|
1268 atom_header = ngx_mp4_atom_header(mp4);
|
|
1269 ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k');
|
|
1270
|
|
1271 atom = &trak->trak_atom_buf;
|
|
1272 atom->temporary = 1;
|
|
1273 atom->pos = atom_header;
|
|
1274 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1275
|
|
1276 trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom;
|
|
1277
|
|
1278 atom_end = mp4->buffer_pos + atom_data_size;
|
|
1279 atom_file_end = mp4->offset + atom_data_size;
|
|
1280
|
|
1281 rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size);
|
|
1282
|
|
1283 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1284 "mp4 trak atom: %i", rc);
|
|
1285
|
|
1286 if (rc == NGX_DECLINED) {
|
|
1287 /* skip this trak */
|
|
1288 ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t));
|
|
1289 mp4->trak.nelts--;
|
|
1290 mp4->buffer_pos = atom_end;
|
|
1291 mp4->offset = atom_file_end;
|
|
1292 return NGX_OK;
|
|
1293 }
|
|
1294
|
|
1295 return rc;
|
|
1296 }
|
|
1297
|
|
1298
|
|
1299 static void
|
|
1300 ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4,
|
|
1301 ngx_http_mp4_trak_t *trak)
|
|
1302 {
|
|
1303 ngx_buf_t *atom;
|
|
1304
|
|
1305 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1306 atom = &trak->trak_atom_buf;
|
|
1307 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1308 }
|
|
1309
|
|
1310
|
|
1311 static ngx_int_t
|
|
1312 ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1313 {
|
|
1314 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1315 "\"%s\" mp4 compressed moov atom (cmov) is not supported",
|
|
1316 mp4->file.name.data);
|
|
1317
|
|
1318 return NGX_ERROR;
|
|
1319 }
|
|
1320
|
|
1321
|
|
1322 typedef struct {
|
|
1323 u_char size[4];
|
|
1324 u_char name[4];
|
|
1325 u_char version[1];
|
|
1326 u_char flags[3];
|
|
1327 u_char creation_time[4];
|
|
1328 u_char modification_time[4];
|
|
1329 u_char track_id[4];
|
|
1330 u_char reserved1[4];
|
|
1331 u_char duration[4];
|
|
1332 u_char reserved2[8];
|
|
1333 u_char layer[2];
|
|
1334 u_char group[2];
|
|
1335 u_char volume[2];
|
|
1336 u_char reverved3[2];
|
|
1337 u_char matrix[36];
|
|
1338 u_char width[4];
|
|
1339 u_char heigth[4];
|
|
1340 } ngx_mp4_tkhd_atom_t;
|
|
1341
|
|
1342 typedef struct {
|
|
1343 u_char size[4];
|
|
1344 u_char name[4];
|
|
1345 u_char version[1];
|
|
1346 u_char flags[3];
|
|
1347 u_char creation_time[8];
|
|
1348 u_char modification_time[8];
|
|
1349 u_char track_id[4];
|
|
1350 u_char reserved1[4];
|
|
1351 u_char duration[8];
|
|
1352 u_char reserved2[8];
|
|
1353 u_char layer[2];
|
|
1354 u_char group[2];
|
|
1355 u_char volume[2];
|
|
1356 u_char reverved3[2];
|
|
1357 u_char matrix[36];
|
|
1358 u_char width[4];
|
|
1359 u_char heigth[4];
|
|
1360 } ngx_mp4_tkhd64_atom_t;
|
|
1361
|
|
1362
|
|
1363 static ngx_int_t
|
|
1364 ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1365 {
|
|
1366 u_char *atom_header;
|
|
1367 size_t atom_size;
|
|
1368 uint64_t duration;
|
|
1369 ngx_buf_t *atom;
|
|
1370 ngx_http_mp4_trak_t *trak;
|
|
1371 ngx_mp4_tkhd_atom_t *tkhd_atom;
|
|
1372 ngx_mp4_tkhd64_atom_t *tkhd64_atom;
|
|
1373
|
|
1374 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom");
|
|
1375
|
|
1376 atom_header = ngx_mp4_atom_header(mp4);
|
|
1377 tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header;
|
|
1378 tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header;
|
|
1379 ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd');
|
|
1380
|
670
|
1381 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd_atom_t) > atom_data_size) {
|
|
1382 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1383 "\"%s\" mp4 tkhd atom too small", mp4->file.name.data);
|
|
1384 return NGX_ERROR;
|
|
1385 }
|
|
1386
|
638
|
1387 if (tkhd_atom->version[0] == 0) {
|
|
1388 /* version 0: 32-bit duration */
|
|
1389 duration = ngx_mp4_get_32value(tkhd_atom->duration);
|
|
1390
|
|
1391 } else {
|
|
1392 /* version 1: 64-bit duration */
|
670
|
1393
|
|
1394 if (ngx_mp4_atom_data_size(ngx_mp4_tkhd64_atom_t) > atom_data_size) {
|
|
1395 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1396 "\"%s\" mp4 tkhd atom too small",
|
|
1397 mp4->file.name.data);
|
|
1398 return NGX_ERROR;
|
|
1399 }
|
|
1400
|
638
|
1401 duration = ngx_mp4_get_64value(tkhd64_atom->duration);
|
|
1402 }
|
|
1403
|
|
1404 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1405 "tkhd duration:%uL, time:%.3fs",
|
|
1406 duration, (double) duration / mp4->timescale);
|
|
1407
|
|
1408 duration -= (uint64_t) mp4->start * mp4->timescale / 1000;
|
|
1409
|
|
1410 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1411 "tkhd new duration:%uL, time:%.3fs",
|
|
1412 duration, (double) duration / mp4->timescale);
|
|
1413
|
|
1414 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1415
|
|
1416 trak = ngx_mp4_last_trak(mp4);
|
|
1417 trak->tkhd_size = atom_size;
|
|
1418
|
|
1419 ngx_mp4_set_32value(tkhd_atom->size, atom_size);
|
|
1420
|
|
1421 if (tkhd_atom->version[0] == 0) {
|
|
1422 ngx_mp4_set_32value(tkhd_atom->duration, duration);
|
|
1423
|
|
1424 } else {
|
|
1425 ngx_mp4_set_64value(tkhd64_atom->duration, duration);
|
|
1426 }
|
|
1427
|
|
1428 atom = &trak->tkhd_atom_buf;
|
|
1429 atom->temporary = 1;
|
|
1430 atom->pos = atom_header;
|
|
1431 atom->last = atom_header + atom_size;
|
|
1432
|
|
1433 trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom;
|
|
1434
|
|
1435 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1436
|
|
1437 return NGX_OK;
|
|
1438 }
|
|
1439
|
|
1440
|
|
1441 static ngx_int_t
|
|
1442 ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1443 {
|
|
1444 u_char *atom_header;
|
|
1445 ngx_buf_t *atom;
|
|
1446 ngx_http_mp4_trak_t *trak;
|
|
1447
|
|
1448 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom");
|
|
1449
|
|
1450 atom_header = ngx_mp4_atom_header(mp4);
|
|
1451 ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a');
|
|
1452
|
|
1453 trak = ngx_mp4_last_trak(mp4);
|
|
1454
|
|
1455 atom = &trak->mdia_atom_buf;
|
|
1456 atom->temporary = 1;
|
|
1457 atom->pos = atom_header;
|
|
1458 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1459
|
|
1460 trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom;
|
|
1461
|
|
1462 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size);
|
|
1463 }
|
|
1464
|
|
1465
|
|
1466 static void
|
|
1467 ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4,
|
|
1468 ngx_http_mp4_trak_t *trak)
|
|
1469 {
|
|
1470 ngx_buf_t *atom;
|
|
1471
|
|
1472 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1473 atom = &trak->mdia_atom_buf;
|
|
1474 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1475 }
|
|
1476
|
|
1477
|
|
1478 typedef struct {
|
|
1479 u_char size[4];
|
|
1480 u_char name[4];
|
|
1481 u_char version[1];
|
|
1482 u_char flags[3];
|
|
1483 u_char creation_time[4];
|
|
1484 u_char modification_time[4];
|
|
1485 u_char timescale[4];
|
|
1486 u_char duration[4];
|
|
1487 u_char language[2];
|
|
1488 u_char quality[2];
|
|
1489 } ngx_mp4_mdhd_atom_t;
|
|
1490
|
|
1491 typedef struct {
|
|
1492 u_char size[4];
|
|
1493 u_char name[4];
|
|
1494 u_char version[1];
|
|
1495 u_char flags[3];
|
|
1496 u_char creation_time[8];
|
|
1497 u_char modification_time[8];
|
|
1498 u_char timescale[4];
|
|
1499 u_char duration[8];
|
|
1500 u_char language[2];
|
|
1501 u_char quality[2];
|
|
1502 } ngx_mp4_mdhd64_atom_t;
|
|
1503
|
|
1504
|
|
1505 static ngx_int_t
|
|
1506 ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1507 {
|
|
1508 u_char *atom_header;
|
|
1509 size_t atom_size;
|
|
1510 uint32_t timescale;
|
|
1511 uint64_t duration;
|
|
1512 ngx_buf_t *atom;
|
|
1513 ngx_http_mp4_trak_t *trak;
|
|
1514 ngx_mp4_mdhd_atom_t *mdhd_atom;
|
|
1515 ngx_mp4_mdhd64_atom_t *mdhd64_atom;
|
|
1516
|
|
1517 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom");
|
|
1518
|
|
1519 atom_header = ngx_mp4_atom_header(mp4);
|
|
1520 mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header;
|
|
1521 mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header;
|
|
1522 ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd');
|
|
1523
|
670
|
1524 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd_atom_t) > atom_data_size) {
|
|
1525 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1526 "\"%s\" mp4 mdhd atom too small", mp4->file.name.data);
|
|
1527 return NGX_ERROR;
|
|
1528 }
|
|
1529
|
638
|
1530 if (mdhd_atom->version[0] == 0) {
|
|
1531 /* version 0: everything is 32-bit */
|
|
1532 timescale = ngx_mp4_get_32value(mdhd_atom->timescale);
|
|
1533 duration = ngx_mp4_get_32value(mdhd_atom->duration);
|
|
1534
|
|
1535 } else {
|
|
1536 /* version 1: 64-bit duration and 32-bit timescale */
|
670
|
1537
|
|
1538 if (ngx_mp4_atom_data_size(ngx_mp4_mdhd64_atom_t) > atom_data_size) {
|
|
1539 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1540 "\"%s\" mp4 mdhd atom too small",
|
|
1541 mp4->file.name.data);
|
|
1542 return NGX_ERROR;
|
|
1543 }
|
|
1544
|
638
|
1545 timescale = ngx_mp4_get_32value(mdhd64_atom->timescale);
|
|
1546 duration = ngx_mp4_get_64value(mdhd64_atom->duration);
|
|
1547 }
|
|
1548
|
|
1549 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1550 "mdhd timescale:%uD, duration:%uL, time:%.3fs",
|
|
1551 timescale, duration, (double) duration / timescale);
|
|
1552
|
|
1553 duration -= (uint64_t) mp4->start * timescale / 1000;
|
|
1554
|
|
1555 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1556 "mdhd new duration:%uL, time:%.3fs",
|
|
1557 duration, (double) duration / timescale);
|
|
1558
|
|
1559 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1560
|
|
1561 trak = ngx_mp4_last_trak(mp4);
|
|
1562 trak->mdhd_size = atom_size;
|
|
1563 trak->timescale = timescale;
|
|
1564
|
|
1565 ngx_mp4_set_32value(mdhd_atom->size, atom_size);
|
|
1566
|
|
1567 if (mdhd_atom->version[0] == 0) {
|
|
1568 ngx_mp4_set_32value(mdhd_atom->duration, duration);
|
|
1569
|
|
1570 } else {
|
|
1571 ngx_mp4_set_64value(mdhd64_atom->duration, duration);
|
|
1572 }
|
|
1573
|
|
1574 atom = &trak->mdhd_atom_buf;
|
|
1575 atom->temporary = 1;
|
|
1576 atom->pos = atom_header;
|
|
1577 atom->last = atom_header + atom_size;
|
|
1578
|
|
1579 trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom;
|
|
1580
|
|
1581 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1582
|
|
1583 return NGX_OK;
|
|
1584 }
|
|
1585
|
|
1586
|
|
1587 static ngx_int_t
|
|
1588 ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1589 {
|
|
1590 u_char *atom_header;
|
|
1591 size_t atom_size;
|
|
1592 ngx_buf_t *atom;
|
|
1593 ngx_http_mp4_trak_t *trak;
|
|
1594
|
|
1595 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom");
|
|
1596
|
|
1597 atom_header = ngx_mp4_atom_header(mp4);
|
|
1598 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1599 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1600 ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r');
|
|
1601
|
|
1602 trak = ngx_mp4_last_trak(mp4);
|
|
1603
|
|
1604 atom = &trak->hdlr_atom_buf;
|
|
1605 atom->temporary = 1;
|
|
1606 atom->pos = atom_header;
|
|
1607 atom->last = atom_header + atom_size;
|
|
1608
|
|
1609 trak->hdlr_size = atom_size;
|
|
1610 trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom;
|
|
1611
|
|
1612 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1613
|
|
1614 return NGX_OK;
|
|
1615 }
|
|
1616
|
|
1617
|
|
1618 static ngx_int_t
|
|
1619 ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1620 {
|
|
1621 u_char *atom_header;
|
|
1622 ngx_buf_t *atom;
|
|
1623 ngx_http_mp4_trak_t *trak;
|
|
1624
|
|
1625 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom");
|
|
1626
|
|
1627 atom_header = ngx_mp4_atom_header(mp4);
|
|
1628 ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f');
|
|
1629
|
|
1630 trak = ngx_mp4_last_trak(mp4);
|
|
1631
|
|
1632 atom = &trak->minf_atom_buf;
|
|
1633 atom->temporary = 1;
|
|
1634 atom->pos = atom_header;
|
|
1635 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1636
|
|
1637 trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom;
|
|
1638
|
|
1639 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size);
|
|
1640 }
|
|
1641
|
|
1642
|
|
1643 static void
|
|
1644 ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4,
|
|
1645 ngx_http_mp4_trak_t *trak)
|
|
1646 {
|
|
1647 ngx_buf_t *atom;
|
|
1648
|
|
1649 trak->size += sizeof(ngx_mp4_atom_header_t)
|
|
1650 + trak->vmhd_size
|
|
1651 + trak->smhd_size
|
|
1652 + trak->dinf_size;
|
|
1653 atom = &trak->minf_atom_buf;
|
|
1654 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1655 }
|
|
1656
|
|
1657
|
|
1658 static ngx_int_t
|
|
1659 ngx_http_mp4_read_vmhd_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 vmhd 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, 'v', 'm', 'h', 'd');
|
|
1672
|
|
1673 trak = ngx_mp4_last_trak(mp4);
|
|
1674
|
|
1675 atom = &trak->vmhd_atom_buf;
|
|
1676 atom->temporary = 1;
|
|
1677 atom->pos = atom_header;
|
|
1678 atom->last = atom_header + atom_size;
|
|
1679
|
|
1680 trak->vmhd_size += atom_size;
|
|
1681 trak->out[NGX_HTTP_MP4_VMHD_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_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1691 {
|
|
1692 u_char *atom_header;
|
|
1693 size_t atom_size;
|
|
1694 ngx_buf_t *atom;
|
|
1695 ngx_http_mp4_trak_t *trak;
|
|
1696
|
|
1697 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom");
|
|
1698
|
|
1699 atom_header = ngx_mp4_atom_header(mp4);
|
|
1700 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1701 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1702 ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd');
|
|
1703
|
|
1704 trak = ngx_mp4_last_trak(mp4);
|
|
1705
|
|
1706 atom = &trak->smhd_atom_buf;
|
|
1707 atom->temporary = 1;
|
|
1708 atom->pos = atom_header;
|
|
1709 atom->last = atom_header + atom_size;
|
|
1710
|
|
1711 trak->vmhd_size += atom_size;
|
|
1712 trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom;
|
|
1713
|
|
1714 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1715
|
|
1716 return NGX_OK;
|
|
1717 }
|
|
1718
|
|
1719
|
|
1720 static ngx_int_t
|
|
1721 ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1722 {
|
|
1723 u_char *atom_header;
|
|
1724 size_t atom_size;
|
|
1725 ngx_buf_t *atom;
|
|
1726 ngx_http_mp4_trak_t *trak;
|
|
1727
|
|
1728 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom");
|
|
1729
|
|
1730 atom_header = ngx_mp4_atom_header(mp4);
|
|
1731 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1732 ngx_mp4_set_32value(atom_header, atom_size);
|
|
1733 ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f');
|
|
1734
|
|
1735 trak = ngx_mp4_last_trak(mp4);
|
|
1736
|
|
1737 atom = &trak->dinf_atom_buf;
|
|
1738 atom->temporary = 1;
|
|
1739 atom->pos = atom_header;
|
|
1740 atom->last = atom_header + atom_size;
|
|
1741
|
|
1742 trak->dinf_size += atom_size;
|
|
1743 trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom;
|
|
1744
|
|
1745 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1746
|
|
1747 return NGX_OK;
|
|
1748 }
|
|
1749
|
|
1750
|
|
1751 static ngx_int_t
|
|
1752 ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1753 {
|
|
1754 u_char *atom_header;
|
|
1755 ngx_buf_t *atom;
|
|
1756 ngx_http_mp4_trak_t *trak;
|
|
1757
|
|
1758 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom");
|
|
1759
|
|
1760 atom_header = ngx_mp4_atom_header(mp4);
|
|
1761 ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l');
|
|
1762
|
|
1763 trak = ngx_mp4_last_trak(mp4);
|
|
1764
|
|
1765 atom = &trak->stbl_atom_buf;
|
|
1766 atom->temporary = 1;
|
|
1767 atom->pos = atom_header;
|
|
1768 atom->last = atom_header + sizeof(ngx_mp4_atom_header_t);
|
|
1769
|
|
1770 trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom;
|
|
1771
|
|
1772 return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size);
|
|
1773 }
|
|
1774
|
|
1775
|
|
1776 static void
|
|
1777 ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4,
|
|
1778 ngx_http_mp4_trak_t *trak)
|
|
1779 {
|
|
1780 ngx_buf_t *atom;
|
|
1781
|
|
1782 trak->size += sizeof(ngx_mp4_atom_header_t);
|
|
1783 atom = &trak->stbl_atom_buf;
|
|
1784 ngx_mp4_set_32value(atom->pos, trak->size);
|
|
1785 }
|
|
1786
|
|
1787
|
|
1788 typedef struct {
|
|
1789 u_char size[4];
|
|
1790 u_char name[4];
|
|
1791 u_char version[1];
|
|
1792 u_char flags[3];
|
|
1793 u_char entries[4];
|
|
1794
|
|
1795 u_char media_size[4];
|
|
1796 u_char media_name[4];
|
|
1797 } ngx_mp4_stsd_atom_t;
|
|
1798
|
|
1799
|
|
1800 static ngx_int_t
|
|
1801 ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1802 {
|
|
1803 u_char *atom_header, *atom_table;
|
|
1804 size_t atom_size;
|
|
1805 ngx_buf_t *atom;
|
|
1806 ngx_mp4_stsd_atom_t *stsd_atom;
|
|
1807 ngx_http_mp4_trak_t *trak;
|
|
1808
|
|
1809 /* sample description atom */
|
|
1810
|
|
1811 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom");
|
|
1812
|
|
1813 atom_header = ngx_mp4_atom_header(mp4);
|
|
1814 stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header;
|
|
1815 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
1816 atom_table = atom_header + atom_size;
|
|
1817 ngx_mp4_set_32value(stsd_atom->size, atom_size);
|
|
1818 ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd');
|
|
1819
|
670
|
1820 if (ngx_mp4_atom_data_size(ngx_mp4_stsd_atom_t) > atom_data_size) {
|
638
|
1821 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
670
|
1822 "\"%s\" mp4 stsd atom too small", mp4->file.name.data);
|
638
|
1823 return NGX_ERROR;
|
|
1824 }
|
|
1825
|
|
1826 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1827 "stsd entries:%uD, media:%*s",
|
|
1828 ngx_mp4_get_32value(stsd_atom->entries),
|
|
1829 4, stsd_atom->media_name);
|
|
1830
|
|
1831 /* supported media format: "avc1" (H.264) and "mp4a" (MPEG-4/AAC) */
|
|
1832
|
|
1833 if (ngx_strncmp(stsd_atom->media_name, "avc1", 4) != 0
|
|
1834 && ngx_strncmp(stsd_atom->media_name, "mp4a", 4) != 0)
|
|
1835 {
|
|
1836 return NGX_DECLINED;
|
|
1837 }
|
|
1838
|
|
1839 trak = ngx_mp4_last_trak(mp4);
|
|
1840
|
|
1841 atom = &trak->stsd_atom_buf;
|
|
1842 atom->temporary = 1;
|
|
1843 atom->pos = atom_header;
|
|
1844 atom->last = atom_table;
|
|
1845
|
|
1846 trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom;
|
|
1847 trak->size += atom_size;
|
|
1848
|
|
1849 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1850
|
|
1851 return NGX_OK;
|
|
1852 }
|
|
1853
|
|
1854
|
|
1855 typedef struct {
|
|
1856 u_char size[4];
|
|
1857 u_char name[4];
|
|
1858 u_char version[1];
|
|
1859 u_char flags[3];
|
|
1860 u_char entries[4];
|
|
1861 } ngx_mp4_stts_atom_t;
|
|
1862
|
|
1863 typedef struct {
|
|
1864 u_char count[4];
|
|
1865 u_char duration[4];
|
|
1866 } ngx_mp4_stts_entry_t;
|
|
1867
|
|
1868
|
|
1869 static ngx_int_t
|
|
1870 ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
1871 {
|
|
1872 u_char *atom_header, *atom_table, *atom_end;
|
|
1873 uint32_t entries;
|
|
1874 ngx_buf_t *atom, *data;
|
|
1875 ngx_mp4_stts_atom_t *stts_atom;
|
|
1876 ngx_http_mp4_trak_t *trak;
|
|
1877
|
|
1878 /* time-to-sample atom */
|
|
1879
|
|
1880 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom");
|
|
1881
|
|
1882 atom_header = ngx_mp4_atom_header(mp4);
|
|
1883 stts_atom = (ngx_mp4_stts_atom_t *) atom_header;
|
|
1884 ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's');
|
|
1885
|
670
|
1886 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) > atom_data_size) {
|
|
1887 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1888 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
1889 return NGX_ERROR;
|
|
1890 }
|
|
1891
|
638
|
1892 entries = ngx_mp4_get_32value(stts_atom->entries);
|
|
1893
|
|
1894 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1895 "mp4 time-to-sample entries:%uD", entries);
|
|
1896
|
670
|
1897 if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t)
|
|
1898 + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size)
|
|
1899 {
|
|
1900 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1901 "\"%s\" mp4 stts atom too small", mp4->file.name.data);
|
|
1902 return NGX_ERROR;
|
|
1903 }
|
|
1904
|
638
|
1905 atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t);
|
|
1906 atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t);
|
|
1907
|
|
1908 trak = ngx_mp4_last_trak(mp4);
|
|
1909 trak->time_to_sample_entries = entries;
|
|
1910
|
|
1911 atom = &trak->stts_atom_buf;
|
|
1912 atom->temporary = 1;
|
|
1913 atom->pos = atom_header;
|
|
1914 atom->last = atom_table;
|
|
1915
|
|
1916 data = &trak->stts_data_buf;
|
|
1917 data->temporary = 1;
|
|
1918 data->pos = atom_table;
|
|
1919 data->last = atom_end;
|
|
1920
|
|
1921 trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom;
|
|
1922 trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data;
|
|
1923
|
|
1924 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
1925
|
|
1926 return NGX_OK;
|
|
1927 }
|
|
1928
|
|
1929
|
|
1930 static ngx_int_t
|
|
1931 ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4,
|
|
1932 ngx_http_mp4_trak_t *trak)
|
|
1933 {
|
|
1934 size_t atom_size;
|
|
1935 uint32_t entries, count, duration;
|
|
1936 uint64_t start_time;
|
|
1937 ngx_buf_t *atom, *data;
|
|
1938 ngx_uint_t start_sample;
|
|
1939 ngx_mp4_stts_atom_t *stts_atom;
|
|
1940 ngx_mp4_stts_entry_t *entry, *end;
|
|
1941
|
|
1942 /*
|
|
1943 * mdia.minf.stbl.stts updating requires trak->timescale
|
|
1944 * from mdia.mdhd atom which may reside after mdia.minf
|
|
1945 */
|
|
1946
|
|
1947 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1948 "mp4 stts atom update");
|
|
1949
|
|
1950 data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf;
|
|
1951
|
|
1952 if (data == NULL) {
|
|
1953 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1954 "no mp4 stts atoms were found in \"%s\"",
|
|
1955 mp4->file.name.data);
|
|
1956 return NGX_ERROR;
|
|
1957 }
|
|
1958
|
|
1959 entries = trak->time_to_sample_entries;
|
644
|
1960 start_time = (uint64_t) mp4->start * trak->timescale / 1000;
|
638
|
1961
|
|
1962 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1963 "time-to-sample start_time:%uL", start_time);
|
|
1964
|
|
1965 start_sample = 0;
|
|
1966 entry = (ngx_mp4_stts_entry_t *) data->pos;
|
|
1967 end = (ngx_mp4_stts_entry_t *) data->last;
|
|
1968
|
|
1969 while (entry < end) {
|
|
1970 count = ngx_mp4_get_32value(entry->count);
|
|
1971 duration = ngx_mp4_get_32value(entry->duration);
|
|
1972
|
|
1973 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1974 "count:%uD, duration:%uD", count, duration);
|
|
1975
|
650
|
1976 if (start_time < (uint64_t) count * duration) {
|
638
|
1977 start_sample += (ngx_uint_t) (start_time / duration);
|
670
|
1978 count -= (uint32_t) (start_time / duration);
|
638
|
1979 ngx_mp4_set_32value(entry->count, count);
|
|
1980 goto found;
|
|
1981 }
|
|
1982
|
|
1983 start_sample += count;
|
|
1984 start_time -= count * duration;
|
|
1985 entries--;
|
|
1986 entry++;
|
|
1987 }
|
|
1988
|
|
1989 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
1990 "start time is out mp4 stts samples in \"%s\"",
|
|
1991 mp4->file.name.data);
|
|
1992
|
|
1993 return NGX_ERROR;
|
|
1994
|
|
1995 found:
|
|
1996
|
|
1997 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
1998 "start_sample:%ui, new count:%uD", start_sample, count);
|
|
1999
|
|
2000 trak->start_sample = start_sample;
|
|
2001
|
|
2002 data->pos = (u_char *) entry;
|
|
2003 atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos);
|
|
2004 trak->size += atom_size;
|
|
2005
|
|
2006 atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf;
|
|
2007 stts_atom = (ngx_mp4_stts_atom_t *) atom->pos;
|
|
2008 ngx_mp4_set_32value(stts_atom->size, atom_size);
|
|
2009 ngx_mp4_set_32value(stts_atom->entries, entries);
|
|
2010
|
|
2011 return NGX_OK;
|
|
2012 }
|
|
2013
|
|
2014
|
|
2015 typedef struct {
|
|
2016 u_char size[4];
|
|
2017 u_char name[4];
|
|
2018 u_char version[1];
|
|
2019 u_char flags[3];
|
|
2020 u_char entries[4];
|
|
2021 } ngx_http_mp4_stss_atom_t;
|
|
2022
|
|
2023
|
|
2024 static ngx_int_t
|
|
2025 ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2026 {
|
|
2027 u_char *atom_header, *atom_table, *atom_end;
|
|
2028 uint32_t entries;
|
|
2029 ngx_buf_t *atom, *data;
|
|
2030 ngx_http_mp4_trak_t *trak;
|
|
2031 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
2032
|
|
2033 /* sync samples atom */
|
|
2034
|
|
2035 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom");
|
|
2036
|
|
2037 atom_header = ngx_mp4_atom_header(mp4);
|
|
2038 stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header;
|
|
2039 ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's');
|
|
2040
|
670
|
2041 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) > atom_data_size) {
|
|
2042 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2043 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
|
2044 return NGX_ERROR;
|
|
2045 }
|
|
2046
|
638
|
2047 entries = ngx_mp4_get_32value(stss_atom->entries);
|
|
2048
|
|
2049 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2050 "sync sample entries:%uD", entries);
|
|
2051
|
|
2052 trak = ngx_mp4_last_trak(mp4);
|
|
2053 trak->sync_samples_entries = entries;
|
|
2054
|
|
2055 atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t);
|
|
2056
|
|
2057 atom = &trak->stss_atom_buf;
|
|
2058 atom->temporary = 1;
|
|
2059 atom->pos = atom_header;
|
|
2060 atom->last = atom_table;
|
|
2061
|
670
|
2062 if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t)
|
|
2063 + entries * sizeof(uint32_t) > atom_data_size)
|
|
2064 {
|
638
|
2065 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
670
|
2066 "\"%s\" mp4 stss atom too small", mp4->file.name.data);
|
638
|
2067 return NGX_ERROR;
|
|
2068 }
|
|
2069
|
670
|
2070 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
2071
|
638
|
2072 data = &trak->stss_data_buf;
|
|
2073 data->temporary = 1;
|
|
2074 data->pos = atom_table;
|
|
2075 data->last = atom_end;
|
|
2076
|
|
2077 trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom;
|
|
2078 trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data;
|
|
2079
|
|
2080 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2081
|
|
2082 return NGX_OK;
|
|
2083 }
|
|
2084
|
|
2085
|
|
2086 static ngx_int_t
|
|
2087 ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4,
|
|
2088 ngx_http_mp4_trak_t *trak)
|
|
2089 {
|
|
2090 size_t atom_size;
|
|
2091 uint32_t entries, sample, start_sample, *entry, *end;
|
|
2092 ngx_buf_t *atom, *data;
|
|
2093 ngx_http_mp4_stss_atom_t *stss_atom;
|
|
2094
|
|
2095 /*
|
|
2096 * mdia.minf.stbl.stss updating requires trak->start_sample
|
|
2097 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2098 * atom which may reside after mdia.minf
|
|
2099 */
|
|
2100
|
|
2101 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2102 "mp4 stss atom update");
|
|
2103
|
|
2104 data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf;
|
|
2105
|
|
2106 if (data == NULL) {
|
|
2107 return NGX_OK;
|
|
2108 }
|
|
2109
|
|
2110 /* sync samples starts from 1 */
|
|
2111 start_sample = trak->start_sample + 1;
|
|
2112 entries = trak->sync_samples_entries;
|
|
2113
|
|
2114 entry = (uint32_t *) data->pos;
|
|
2115 end = (uint32_t *) data->last;
|
|
2116
|
|
2117 while (entry < end) {
|
|
2118 sample = ngx_mp4_get_32value(entry);
|
|
2119
|
|
2120 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2121 "start:%uD, sync:%uD", start_sample, sample);
|
|
2122
|
|
2123 if (sample >= start_sample) {
|
|
2124 goto found;
|
|
2125 }
|
|
2126
|
|
2127 entries--;
|
|
2128 entry++;
|
|
2129 }
|
|
2130
|
|
2131 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2132 "start sample is out of mp4 stss atom in \"%s\"",
|
|
2133 mp4->file.name.data);
|
|
2134
|
|
2135 return NGX_ERROR;
|
|
2136
|
|
2137 found:
|
|
2138
|
|
2139 data->pos = (u_char *) entry;
|
|
2140
|
|
2141 start_sample = trak->start_sample;
|
|
2142
|
|
2143 while (entry < end) {
|
|
2144 sample = ngx_mp4_get_32value(entry);
|
|
2145 sample -= start_sample;
|
|
2146 ngx_mp4_set_32value(entry, sample);
|
|
2147 entry++;
|
|
2148 }
|
|
2149
|
|
2150 atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos);
|
|
2151 trak->size += atom_size;
|
|
2152
|
|
2153 atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf;
|
|
2154 stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos;
|
|
2155
|
|
2156 ngx_mp4_set_32value(stss_atom->size, atom_size);
|
|
2157 ngx_mp4_set_32value(stss_atom->entries, entries);
|
|
2158
|
|
2159 return NGX_OK;
|
|
2160 }
|
|
2161
|
|
2162
|
|
2163 typedef struct {
|
|
2164 u_char size[4];
|
|
2165 u_char name[4];
|
|
2166 u_char version[1];
|
|
2167 u_char flags[3];
|
|
2168 u_char entries[4];
|
|
2169 } ngx_mp4_ctts_atom_t;
|
|
2170
|
|
2171 typedef struct {
|
|
2172 u_char count[4];
|
|
2173 u_char offset[4];
|
|
2174 } ngx_mp4_ctts_entry_t;
|
|
2175
|
|
2176
|
|
2177 static ngx_int_t
|
|
2178 ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2179 {
|
|
2180 u_char *atom_header, *atom_table, *atom_end;
|
|
2181 uint32_t entries;
|
|
2182 ngx_buf_t *atom, *data;
|
|
2183 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
2184 ngx_http_mp4_trak_t *trak;
|
|
2185
|
|
2186 /* composition offsets atom */
|
|
2187
|
|
2188 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom");
|
|
2189
|
|
2190 atom_header = ngx_mp4_atom_header(mp4);
|
|
2191 ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header;
|
|
2192 ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's');
|
|
2193
|
670
|
2194 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) > atom_data_size) {
|
|
2195 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2196 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
|
2197 return NGX_ERROR;
|
|
2198 }
|
|
2199
|
638
|
2200 entries = ngx_mp4_get_32value(ctts_atom->entries);
|
|
2201
|
|
2202 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2203 "composition offset entries:%uD", entries);
|
|
2204
|
|
2205 trak = ngx_mp4_last_trak(mp4);
|
|
2206 trak->composition_offset_entries = entries;
|
|
2207
|
|
2208 atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t);
|
|
2209
|
|
2210 atom = &trak->ctts_atom_buf;
|
|
2211 atom->temporary = 1;
|
|
2212 atom->pos = atom_header;
|
|
2213 atom->last = atom_table;
|
|
2214
|
670
|
2215 if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t)
|
|
2216 + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size)
|
|
2217 {
|
638
|
2218 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
670
|
2219 "\"%s\" mp4 ctts atom too small", mp4->file.name.data);
|
638
|
2220 return NGX_ERROR;
|
|
2221 }
|
|
2222
|
670
|
2223 atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t);
|
|
2224
|
638
|
2225 data = &trak->ctts_data_buf;
|
|
2226 data->temporary = 1;
|
|
2227 data->pos = atom_table;
|
|
2228 data->last = atom_end;
|
|
2229
|
|
2230 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom;
|
|
2231 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data;
|
|
2232
|
|
2233 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2234
|
|
2235 return NGX_OK;
|
|
2236 }
|
|
2237
|
|
2238
|
|
2239 static void
|
|
2240 ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4,
|
|
2241 ngx_http_mp4_trak_t *trak)
|
|
2242 {
|
|
2243 size_t atom_size;
|
|
2244 uint32_t entries, count, start_sample;
|
|
2245 ngx_buf_t *atom, *data;
|
|
2246 ngx_mp4_ctts_atom_t *ctts_atom;
|
|
2247 ngx_mp4_ctts_entry_t *entry, *end;
|
|
2248
|
|
2249 /*
|
|
2250 * mdia.minf.stbl.ctts updating requires trak->start_sample
|
|
2251 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2252 * atom which may reside after mdia.minf
|
|
2253 */
|
|
2254
|
|
2255 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2256 "mp4 ctts atom update");
|
|
2257
|
|
2258 data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf;
|
|
2259
|
|
2260 if (data == NULL) {
|
|
2261 return;
|
|
2262 }
|
|
2263
|
|
2264 /* sync samples starts from 1 */
|
|
2265 start_sample = trak->start_sample + 1;
|
|
2266 entries = trak->composition_offset_entries;
|
|
2267 entry = (ngx_mp4_ctts_entry_t *) data->pos;
|
|
2268 end = (ngx_mp4_ctts_entry_t *) data->last;
|
|
2269
|
|
2270 while (entry < end) {
|
|
2271 count = ngx_mp4_get_32value(entry->count);
|
|
2272
|
|
2273 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2274 "start:%uD, count:%uD, offset:%uD",
|
|
2275 start_sample, count, ngx_mp4_get_32value(entry->offset));
|
|
2276
|
|
2277 if (start_sample <= count) {
|
|
2278 count -= (start_sample - 1);
|
|
2279 ngx_mp4_set_32value(entry->count, count);
|
|
2280 goto found;
|
|
2281 }
|
|
2282
|
|
2283 start_sample -= count;
|
|
2284 entries--;
|
|
2285 entry++;
|
|
2286 }
|
|
2287
|
|
2288 trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL;
|
|
2289 trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL;
|
|
2290
|
|
2291 return;
|
|
2292
|
|
2293 found:
|
|
2294
|
|
2295 data->pos = (u_char *) entry;
|
|
2296 atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos);
|
|
2297 trak->size += atom_size;
|
|
2298
|
|
2299 atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf;
|
|
2300 ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos;
|
|
2301
|
|
2302 ngx_mp4_set_32value(ctts_atom->size, atom_size);
|
|
2303 ngx_mp4_set_32value(ctts_atom->entries, entries);
|
|
2304
|
|
2305 return;
|
|
2306 }
|
|
2307
|
|
2308
|
|
2309 typedef struct {
|
|
2310 u_char size[4];
|
|
2311 u_char name[4];
|
|
2312 u_char version[1];
|
|
2313 u_char flags[3];
|
|
2314 u_char entries[4];
|
|
2315 } ngx_mp4_stsc_atom_t;
|
|
2316
|
|
2317
|
|
2318 static ngx_int_t
|
|
2319 ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2320 {
|
|
2321 u_char *atom_header, *atom_table, *atom_end;
|
|
2322 uint32_t entries;
|
|
2323 ngx_buf_t *atom, *data;
|
|
2324 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
2325 ngx_http_mp4_trak_t *trak;
|
|
2326
|
|
2327 /* sample-to-chunk atom */
|
|
2328
|
|
2329 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom");
|
|
2330
|
|
2331 atom_header = ngx_mp4_atom_header(mp4);
|
|
2332 stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header;
|
|
2333 ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c');
|
|
2334
|
670
|
2335 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) > atom_data_size) {
|
|
2336 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2337 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
2338 return NGX_ERROR;
|
|
2339 }
|
|
2340
|
638
|
2341 entries = ngx_mp4_get_32value(stsc_atom->entries);
|
|
2342
|
|
2343 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2344 "sample-to-chunk entries:%uD", entries);
|
|
2345
|
670
|
2346 if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t)
|
|
2347 + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size)
|
|
2348 {
|
|
2349 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2350 "\"%s\" mp4 stsc atom too small", mp4->file.name.data);
|
|
2351 return NGX_ERROR;
|
|
2352 }
|
|
2353
|
638
|
2354 atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t);
|
|
2355 atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t);
|
|
2356
|
|
2357 trak = ngx_mp4_last_trak(mp4);
|
|
2358 trak->sample_to_chunk_entries = entries;
|
|
2359
|
|
2360 atom = &trak->stsc_atom_buf;
|
|
2361 atom->temporary = 1;
|
|
2362 atom->pos = atom_header;
|
|
2363 atom->last = atom_table;
|
|
2364
|
|
2365 data = &trak->stsc_data_buf;
|
|
2366 data->temporary = 1;
|
|
2367 data->pos = atom_table;
|
|
2368 data->last = atom_end;
|
|
2369
|
|
2370 trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom;
|
|
2371 trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data;
|
|
2372
|
|
2373 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2374
|
|
2375 return NGX_OK;
|
|
2376 }
|
|
2377
|
|
2378
|
|
2379 static ngx_int_t
|
|
2380 ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4,
|
|
2381 ngx_http_mp4_trak_t *trak)
|
|
2382 {
|
|
2383 size_t atom_size;
|
|
2384 uint32_t start_sample, entries, chunk, samples, id,
|
|
2385 next_chunk, n;
|
|
2386 ngx_buf_t *atom, *data, *buf;
|
|
2387 ngx_mp4_stsc_atom_t *stsc_atom;
|
|
2388 ngx_mp4_stsc_entry_t *entry, *first, *end;
|
|
2389
|
|
2390 /*
|
|
2391 * mdia.minf.stbl.stsc updating requires trak->start_sample
|
|
2392 * from mdia.minf.stbl.stts which depends on value from mdia.mdhd
|
|
2393 * atom which may reside after mdia.minf
|
|
2394 */
|
|
2395
|
|
2396 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2397 "mp4 stsc atom update");
|
|
2398
|
|
2399 data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf;
|
|
2400
|
|
2401 if (data == NULL) {
|
|
2402 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2403 "no mp4 stsc atoms were found in \"%s\"",
|
|
2404 mp4->file.name.data);
|
|
2405 return NGX_ERROR;
|
|
2406 }
|
|
2407
|
670
|
2408 if (trak->sample_to_chunk_entries == 0) {
|
|
2409 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2410 "zero number of entries in stsc atom in \"%s\"",
|
|
2411 mp4->file.name.data);
|
|
2412 return NGX_ERROR;
|
|
2413 }
|
|
2414
|
638
|
2415 start_sample = (uint32_t) trak->start_sample;
|
|
2416 entries = trak->sample_to_chunk_entries - 1;
|
|
2417
|
|
2418 entry = (ngx_mp4_stsc_entry_t *) data->pos;
|
|
2419 end = (ngx_mp4_stsc_entry_t *) data->last;
|
|
2420
|
|
2421 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2422 samples = ngx_mp4_get_32value(entry->samples);
|
|
2423 id = ngx_mp4_get_32value(entry->id);
|
|
2424 entry++;
|
|
2425
|
|
2426 while (entry < end) {
|
|
2427
|
|
2428 next_chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2429
|
|
2430 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2431 "start_sample:%uD, chunk:%uD, chunks:%uD, "
|
|
2432 "samples:%uD, id:%uD",
|
|
2433 start_sample, chunk, next_chunk - chunk, samples, id);
|
|
2434
|
|
2435 n = (next_chunk - chunk) * samples;
|
|
2436
|
|
2437 if (start_sample <= n) {
|
|
2438 goto found;
|
|
2439 }
|
|
2440
|
|
2441 start_sample -= n;
|
|
2442
|
|
2443 chunk = next_chunk;
|
|
2444 samples = ngx_mp4_get_32value(entry->samples);
|
|
2445 id = ngx_mp4_get_32value(entry->id);
|
|
2446 entries--;
|
|
2447 entry++;
|
|
2448 }
|
|
2449
|
|
2450 next_chunk = trak->chunks;
|
|
2451
|
|
2452 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2453 "start_sample:%uD, chunk:%uD, chunks:%uD, samples:%uD",
|
|
2454 start_sample, chunk, next_chunk - chunk, samples);
|
|
2455
|
|
2456 n = (next_chunk - chunk) * samples;
|
|
2457
|
|
2458 if (start_sample > n) {
|
|
2459 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2460 "start time is out mp4 stsc chunks in \"%s\"",
|
|
2461 mp4->file.name.data);
|
|
2462 return NGX_ERROR;
|
|
2463 }
|
|
2464
|
|
2465 found:
|
|
2466
|
|
2467 entries++;
|
|
2468 entry--;
|
|
2469
|
|
2470 if (samples == 0) {
|
|
2471 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2472 "zero number of samples in \"%s\"",
|
|
2473 mp4->file.name.data);
|
|
2474 return NGX_ERROR;
|
|
2475 }
|
|
2476
|
|
2477 trak->start_chunk = chunk - 1;
|
|
2478
|
|
2479 trak->start_chunk += start_sample / samples;
|
|
2480 trak->chunk_samples = start_sample % samples;
|
|
2481
|
|
2482 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2483 "start chunk:%ui, samples:%uD",
|
|
2484 trak->start_chunk, trak->chunk_samples);
|
|
2485
|
|
2486 data->pos = (u_char *) entry;
|
|
2487 atom_size = sizeof(ngx_mp4_stsc_atom_t) + (data->last - data->pos);
|
|
2488
|
656
|
2489 ngx_mp4_set_32value(entry->chunk, 1);
|
|
2490
|
638
|
2491 if (trak->chunk_samples) {
|
|
2492
|
|
2493 first = &trak->stsc_chunk_entry;
|
|
2494 ngx_mp4_set_32value(first->chunk, 1);
|
|
2495 ngx_mp4_set_32value(first->samples, samples - trak->chunk_samples);
|
|
2496 ngx_mp4_set_32value(first->id, id);
|
|
2497
|
|
2498 buf = &trak->stsc_chunk_buf;
|
|
2499 buf->temporary = 1;
|
|
2500 buf->pos = (u_char *) first;
|
|
2501 buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t);
|
|
2502
|
|
2503 trak->out[NGX_HTTP_MP4_STSC_CHUNK].buf = buf;
|
|
2504
|
|
2505 ngx_mp4_set_32value(entry->chunk, 2);
|
|
2506
|
|
2507 atom_size += sizeof(ngx_mp4_stsc_entry_t);
|
|
2508 }
|
|
2509
|
|
2510 while (++entry < end) {
|
|
2511 chunk = ngx_mp4_get_32value(entry->chunk);
|
|
2512 chunk -= trak->start_chunk;
|
|
2513 ngx_mp4_set_32value(entry->chunk, chunk);
|
|
2514 }
|
|
2515
|
|
2516 trak->size += atom_size;
|
|
2517
|
|
2518 atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf;
|
|
2519 stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos;
|
|
2520
|
|
2521 ngx_mp4_set_32value(stsc_atom->size, atom_size);
|
|
2522 ngx_mp4_set_32value(stsc_atom->entries, entries);
|
|
2523
|
|
2524 return NGX_OK;
|
|
2525 }
|
|
2526
|
|
2527
|
|
2528 typedef struct {
|
|
2529 u_char size[4];
|
|
2530 u_char name[4];
|
|
2531 u_char version[1];
|
|
2532 u_char flags[3];
|
|
2533 u_char uniform_size[4];
|
|
2534 u_char entries[4];
|
|
2535 } ngx_mp4_stsz_atom_t;
|
|
2536
|
|
2537
|
|
2538 static ngx_int_t
|
|
2539 ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2540 {
|
|
2541 u_char *atom_header, *atom_table, *atom_end;
|
|
2542 size_t atom_size;
|
|
2543 uint32_t entries, size;
|
|
2544 ngx_buf_t *atom, *data;
|
|
2545 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
2546 ngx_http_mp4_trak_t *trak;
|
|
2547
|
|
2548 /* sample sizes atom */
|
|
2549
|
|
2550 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom");
|
|
2551
|
|
2552 atom_header = ngx_mp4_atom_header(mp4);
|
|
2553 stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header;
|
|
2554 ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z');
|
|
2555
|
670
|
2556 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) > atom_data_size) {
|
|
2557 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2558 "\"%s\" mp4 stsz atom too small", mp4->file.name.data);
|
|
2559 return NGX_ERROR;
|
|
2560 }
|
|
2561
|
638
|
2562 size = ngx_mp4_get_32value(stsz_atom->uniform_size);
|
|
2563 entries = ngx_mp4_get_32value(stsz_atom->entries);
|
|
2564
|
|
2565 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2566 "sample uniform size:%uD, entries:%uD", size, entries);
|
|
2567
|
|
2568 trak = ngx_mp4_last_trak(mp4);
|
|
2569 trak->sample_sizes_entries = entries;
|
|
2570
|
|
2571 atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t);
|
|
2572
|
|
2573 atom = &trak->stsz_atom_buf;
|
|
2574 atom->temporary = 1;
|
|
2575 atom->pos = atom_header;
|
|
2576 atom->last = atom_table;
|
|
2577
|
|
2578 trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom;
|
|
2579
|
|
2580 if (size == 0) {
|
670
|
2581 if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t)
|
|
2582 + entries * sizeof(uint32_t) > atom_data_size)
|
|
2583 {
|
638
|
2584 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
670
|
2585 "\"%s\" mp4 stsz atom too small",
|
638
|
2586 mp4->file.name.data);
|
|
2587 return NGX_ERROR;
|
|
2588 }
|
|
2589
|
670
|
2590 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
2591
|
638
|
2592 data = &trak->stsz_data_buf;
|
|
2593 data->temporary = 1;
|
|
2594 data->pos = atom_table;
|
|
2595 data->last = atom_end;
|
|
2596
|
|
2597 trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data;
|
|
2598
|
|
2599 } else {
|
|
2600 /* if size != 0 then all samples are the same size */
|
|
2601 /* TODO : chunk samples */
|
|
2602 atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size;
|
|
2603 ngx_mp4_set_32value(atom_header, atom_size);
|
|
2604 trak->size += atom_size;
|
|
2605 }
|
|
2606
|
|
2607 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2608
|
|
2609 return NGX_OK;
|
|
2610 }
|
|
2611
|
|
2612
|
670
|
2613 static ngx_int_t
|
638
|
2614 ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4,
|
|
2615 ngx_http_mp4_trak_t *trak)
|
|
2616 {
|
|
2617 size_t atom_size;
|
|
2618 uint32_t *pos, *end;
|
|
2619 ngx_buf_t *atom, *data;
|
|
2620 ngx_mp4_stsz_atom_t *stsz_atom;
|
|
2621
|
|
2622 /*
|
|
2623 * mdia.minf.stbl.stsz updating requires trak->start_sample
|
|
2624 * from mdia.minf.stbl.stts 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 stsz atom update");
|
|
2630
|
|
2631 data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf;
|
|
2632
|
|
2633 if (data) {
|
670
|
2634 if (trak->start_sample > trak->sample_sizes_entries) {
|
|
2635 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2636 "start time is out mp4 stsz samples in \"%s\"",
|
|
2637 mp4->file.name.data);
|
|
2638 return NGX_ERROR;
|
|
2639 }
|
|
2640
|
638
|
2641 data->pos += trak->start_sample * sizeof(uint32_t);
|
|
2642 end = (uint32_t *) data->pos;
|
|
2643
|
|
2644 for (pos = end - trak->chunk_samples; pos < end; pos++) {
|
|
2645 trak->chunk_samples_size += ngx_mp4_get_32value(pos);
|
|
2646 }
|
|
2647
|
|
2648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
640
|
2649 "chunk samples sizes:%uL", trak->chunk_samples_size);
|
638
|
2650
|
|
2651 atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos);
|
|
2652 trak->size += atom_size;
|
|
2653
|
|
2654 atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf;
|
|
2655 stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos;
|
|
2656
|
|
2657 ngx_mp4_set_32value(stsz_atom->size, atom_size);
|
|
2658 ngx_mp4_set_32value(stsz_atom->entries,
|
|
2659 trak->sample_sizes_entries - trak->start_sample);
|
|
2660 }
|
670
|
2661
|
|
2662 return NGX_OK;
|
638
|
2663 }
|
|
2664
|
|
2665
|
|
2666 typedef struct {
|
|
2667 u_char size[4];
|
|
2668 u_char name[4];
|
|
2669 u_char version[1];
|
|
2670 u_char flags[3];
|
|
2671 u_char entries[4];
|
|
2672 } ngx_mp4_stco_atom_t;
|
|
2673
|
|
2674
|
|
2675 static ngx_int_t
|
|
2676 ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2677 {
|
|
2678 u_char *atom_header, *atom_table, *atom_end;
|
|
2679 uint32_t entries;
|
|
2680 ngx_buf_t *atom, *data;
|
|
2681 ngx_mp4_stco_atom_t *stco_atom;
|
|
2682 ngx_http_mp4_trak_t *trak;
|
|
2683
|
|
2684 /* chunk offsets atom */
|
|
2685
|
|
2686 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom");
|
|
2687
|
|
2688 atom_header = ngx_mp4_atom_header(mp4);
|
|
2689 stco_atom = (ngx_mp4_stco_atom_t *) atom_header;
|
|
2690 ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o');
|
|
2691
|
670
|
2692 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) > atom_data_size) {
|
|
2693 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2694 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
2695 return NGX_ERROR;
|
|
2696 }
|
|
2697
|
638
|
2698 entries = ngx_mp4_get_32value(stco_atom->entries);
|
|
2699
|
|
2700 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
2701
|
670
|
2702 if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t)
|
|
2703 + entries * sizeof(uint32_t) > atom_data_size)
|
|
2704 {
|
|
2705 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2706 "\"%s\" mp4 stco atom too small", mp4->file.name.data);
|
|
2707 return NGX_ERROR;
|
|
2708 }
|
|
2709
|
638
|
2710 atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t);
|
|
2711 atom_end = atom_table + entries * sizeof(uint32_t);
|
|
2712
|
|
2713 trak = ngx_mp4_last_trak(mp4);
|
|
2714 trak->chunks = entries;
|
|
2715
|
640
|
2716 atom = &trak->stco_atom_buf;
|
638
|
2717 atom->temporary = 1;
|
|
2718 atom->pos = atom_header;
|
|
2719 atom->last = atom_table;
|
|
2720
|
640
|
2721 data = &trak->stco_data_buf;
|
638
|
2722 data->temporary = 1;
|
|
2723 data->pos = atom_table;
|
|
2724 data->last = atom_end;
|
|
2725
|
|
2726 trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom;
|
|
2727 trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data;
|
|
2728
|
|
2729 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2730
|
|
2731 return NGX_OK;
|
|
2732 }
|
|
2733
|
|
2734
|
|
2735 static ngx_int_t
|
|
2736 ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
2737 ngx_http_mp4_trak_t *trak)
|
|
2738 {
|
|
2739 size_t atom_size;
|
|
2740 ngx_buf_t *atom, *data;
|
|
2741 ngx_mp4_stco_atom_t *stco_atom;
|
|
2742
|
|
2743 /*
|
|
2744 * mdia.minf.stbl.stco updating requires trak->start_chunk
|
|
2745 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
2746 * atom which may reside after mdia.minf
|
|
2747 */
|
|
2748
|
|
2749 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2750 "mp4 stco atom update");
|
|
2751
|
|
2752 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
2753
|
|
2754 if (data == NULL) {
|
|
2755 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2756 "no mp4 stco atoms were found in \"%s\"",
|
|
2757 mp4->file.name.data);
|
|
2758 return NGX_ERROR;
|
|
2759 }
|
|
2760
|
670
|
2761 if (trak->start_chunk > trak->chunks) {
|
|
2762 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2763 "start time is out mp4 stco chunks in \"%s\"",
|
|
2764 mp4->file.name.data);
|
|
2765 return NGX_ERROR;
|
|
2766 }
|
|
2767
|
638
|
2768 data->pos += trak->start_chunk * sizeof(uint32_t);
|
|
2769 atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos);
|
|
2770 trak->size += atom_size;
|
|
2771
|
|
2772 trak->start_offset = ngx_mp4_get_32value(data->pos);
|
|
2773 trak->start_offset += trak->chunk_samples_size;
|
|
2774 ngx_mp4_set_32value(data->pos, trak->start_offset);
|
|
2775
|
|
2776 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2777 "start chunk offset:%uD", trak->start_offset);
|
|
2778
|
|
2779 atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf;
|
|
2780 stco_atom = (ngx_mp4_stco_atom_t *) atom->pos;
|
|
2781
|
|
2782 ngx_mp4_set_32value(stco_atom->size, atom_size);
|
|
2783 ngx_mp4_set_32value(stco_atom->entries, trak->chunks - trak->start_chunk);
|
|
2784
|
|
2785 return NGX_OK;
|
|
2786 }
|
|
2787
|
|
2788
|
|
2789 static void
|
|
2790 ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4,
|
|
2791 ngx_http_mp4_trak_t *trak, int32_t adjustment)
|
|
2792 {
|
|
2793 uint32_t offset, *entry, *end;
|
|
2794 ngx_buf_t *data;
|
|
2795
|
|
2796 /*
|
|
2797 * moov.trak.mdia.minf.stbl.stco adjustment requires
|
|
2798 * minimal start offset of all traks and new moov atom size
|
|
2799 */
|
|
2800
|
|
2801 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2802 "mp4 stco atom adjustment");
|
|
2803
|
|
2804 data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf;
|
|
2805 entry = (uint32_t *) data->pos;
|
|
2806 end = (uint32_t *) data->last;
|
|
2807
|
|
2808 while (entry < end) {
|
|
2809 offset = ngx_mp4_get_32value(entry);
|
|
2810 offset += adjustment;
|
|
2811 ngx_mp4_set_32value(entry, offset);
|
|
2812 entry++;
|
|
2813 }
|
|
2814 }
|
|
2815
|
|
2816
|
640
|
2817 typedef struct {
|
|
2818 u_char size[4];
|
|
2819 u_char name[4];
|
|
2820 u_char version[1];
|
|
2821 u_char flags[3];
|
|
2822 u_char entries[4];
|
|
2823 } ngx_mp4_co64_atom_t;
|
|
2824
|
|
2825
|
|
2826 static ngx_int_t
|
|
2827 ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size)
|
|
2828 {
|
|
2829 u_char *atom_header, *atom_table, *atom_end;
|
|
2830 uint32_t entries;
|
|
2831 ngx_buf_t *atom, *data;
|
|
2832 ngx_mp4_co64_atom_t *co64_atom;
|
|
2833 ngx_http_mp4_trak_t *trak;
|
|
2834
|
|
2835 /* chunk offsets atom */
|
|
2836
|
|
2837 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom");
|
|
2838
|
|
2839 atom_header = ngx_mp4_atom_header(mp4);
|
|
2840 co64_atom = (ngx_mp4_co64_atom_t *) atom_header;
|
|
2841 ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4');
|
|
2842
|
670
|
2843 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) > atom_data_size) {
|
|
2844 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2845 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
2846 return NGX_ERROR;
|
|
2847 }
|
|
2848
|
640
|
2849 entries = ngx_mp4_get_32value(co64_atom->entries);
|
|
2850
|
|
2851 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries);
|
|
2852
|
670
|
2853 if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t)
|
|
2854 + entries * sizeof(uint64_t) > atom_data_size)
|
|
2855 {
|
|
2856 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2857 "\"%s\" mp4 co64 atom too small", mp4->file.name.data);
|
|
2858 return NGX_ERROR;
|
|
2859 }
|
|
2860
|
640
|
2861 atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t);
|
|
2862 atom_end = atom_table + entries * sizeof(uint64_t);
|
|
2863
|
|
2864 trak = ngx_mp4_last_trak(mp4);
|
|
2865 trak->chunks = entries;
|
|
2866
|
|
2867 atom = &trak->co64_atom_buf;
|
|
2868 atom->temporary = 1;
|
|
2869 atom->pos = atom_header;
|
|
2870 atom->last = atom_table;
|
|
2871
|
|
2872 data = &trak->co64_data_buf;
|
|
2873 data->temporary = 1;
|
|
2874 data->pos = atom_table;
|
|
2875 data->last = atom_end;
|
|
2876
|
|
2877 trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom;
|
|
2878 trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data;
|
|
2879
|
|
2880 ngx_mp4_atom_next(mp4, atom_data_size);
|
|
2881
|
|
2882 return NGX_OK;
|
|
2883 }
|
|
2884
|
|
2885
|
|
2886 static ngx_int_t
|
|
2887 ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
2888 ngx_http_mp4_trak_t *trak)
|
|
2889 {
|
|
2890 size_t atom_size;
|
|
2891 ngx_buf_t *atom, *data;
|
|
2892 ngx_mp4_co64_atom_t *co64_atom;
|
|
2893
|
|
2894 /*
|
|
2895 * mdia.minf.stbl.co64 updating requires trak->start_chunk
|
|
2896 * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd
|
|
2897 * atom which may reside after mdia.minf
|
|
2898 */
|
|
2899
|
|
2900 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2901 "mp4 co64 atom update");
|
|
2902
|
|
2903 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
2904
|
|
2905 if (data == NULL) {
|
|
2906 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2907 "no mp4 co64 atoms were found in \"%s\"",
|
|
2908 mp4->file.name.data);
|
|
2909 return NGX_ERROR;
|
|
2910 }
|
|
2911
|
670
|
2912 if (trak->start_chunk > trak->chunks) {
|
|
2913 ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
|
|
2914 "start time is out mp4 co64 chunks in \"%s\"",
|
|
2915 mp4->file.name.data);
|
|
2916 return NGX_ERROR;
|
|
2917 }
|
|
2918
|
640
|
2919 data->pos += trak->start_chunk * sizeof(uint64_t);
|
|
2920 atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos);
|
|
2921 trak->size += atom_size;
|
|
2922
|
|
2923 trak->start_offset = ngx_mp4_get_64value(data->pos);
|
|
2924 trak->start_offset += trak->chunk_samples_size;
|
|
2925 ngx_mp4_set_64value(data->pos, trak->start_offset);
|
|
2926
|
|
2927 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2928 "start chunk offset:%uL", trak->start_offset);
|
|
2929
|
|
2930 atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf;
|
|
2931 co64_atom = (ngx_mp4_co64_atom_t *) atom->pos;
|
|
2932
|
|
2933 ngx_mp4_set_32value(co64_atom->size, atom_size);
|
|
2934 ngx_mp4_set_32value(co64_atom->entries, trak->chunks - trak->start_chunk);
|
|
2935
|
|
2936 return NGX_OK;
|
|
2937 }
|
|
2938
|
|
2939
|
|
2940 static void
|
|
2941 ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4,
|
|
2942 ngx_http_mp4_trak_t *trak, off_t adjustment)
|
|
2943 {
|
|
2944 uint64_t offset, *entry, *end;
|
|
2945 ngx_buf_t *data;
|
|
2946
|
|
2947 /*
|
|
2948 * moov.trak.mdia.minf.stbl.co64 adjustment requires
|
|
2949 * minimal start offset of all traks and new moov atom size
|
|
2950 */
|
|
2951
|
|
2952 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
|
|
2953 "mp4 co64 atom adjustment");
|
|
2954
|
|
2955 data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf;
|
|
2956 entry = (uint64_t *) data->pos;
|
|
2957 end = (uint64_t *) data->last;
|
|
2958
|
|
2959 while (entry < end) {
|
|
2960 offset = ngx_mp4_get_64value(entry);
|
|
2961 offset += adjustment;
|
|
2962 ngx_mp4_set_64value(entry, offset);
|
|
2963 entry++;
|
|
2964 }
|
|
2965 }
|
|
2966
|
|
2967
|
638
|
2968 static char *
|
|
2969 ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
2970 {
|
|
2971 ngx_http_core_loc_conf_t *clcf;
|
|
2972
|
|
2973 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
2974 clcf->handler = ngx_http_mp4_handler;
|
|
2975
|
|
2976 return NGX_CONF_OK;
|
|
2977 }
|
|
2978
|
|
2979
|
|
2980 static void *
|
|
2981 ngx_http_mp4_create_conf(ngx_conf_t *cf)
|
|
2982 {
|
|
2983 ngx_http_mp4_conf_t *conf;
|
|
2984
|
|
2985 conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t));
|
|
2986 if (conf == NULL) {
|
|
2987 return NULL;
|
|
2988 }
|
|
2989
|
|
2990 conf->buffer_size = NGX_CONF_UNSET_SIZE;
|
|
2991 conf->max_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
2992
|
|
2993 return conf;
|
|
2994 }
|
|
2995
|
|
2996
|
|
2997 static char *
|
|
2998 ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
2999 {
|
|
3000 ngx_http_mp4_conf_t *prev = parent;
|
|
3001 ngx_http_mp4_conf_t *conf = child;
|
|
3002
|
|
3003 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024);
|
|
3004 ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size,
|
|
3005 10 * 1024 * 1024);
|
|
3006
|
|
3007 return NGX_CONF_OK;
|
|
3008 }
|