Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_flv_module.c @ 3275:b344b68da8c5
optimize some cycles:
*) delete surplus variable;
*) on i386/amd64 "while (n) / n--" is smaller than "while (n--)",
because the platforms have no postfix operations
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 02 Nov 2009 17:12:09 +0000 |
parents | 975f0558aab3 |
children | 84905c7b2aa7 |
rev | line source |
---|---|
753 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 #include <ngx_config.h> | |
7 #include <ngx_core.h> | |
8 #include <ngx_http.h> | |
9 | |
10 | |
11 static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | |
12 | |
13 static ngx_command_t ngx_http_flv_commands[] = { | |
14 | |
15 { ngx_string("flv"), | |
16 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS, | |
17 ngx_http_flv, | |
18 0, | |
19 0, | |
20 NULL }, | |
21 | |
22 ngx_null_command | |
23 }; | |
24 | |
25 | |
26 static u_char ngx_flv_header[] = "FLV\x1\x1\0\0\0\x9\0\0\0\x9"; | |
27 | |
28 | |
29 static ngx_http_module_t ngx_http_flv_module_ctx = { | |
30 NULL, /* preconfiguration */ | |
31 NULL, /* postconfiguration */ | |
32 | |
33 NULL, /* create main configuration */ | |
34 NULL, /* init main configuration */ | |
35 | |
36 NULL, /* create server configuration */ | |
37 NULL, /* merge server configuration */ | |
38 | |
39 NULL, /* create location configuration */ | |
40 NULL /* merge location configuration */ | |
41 }; | |
42 | |
43 | |
44 ngx_module_t ngx_http_flv_module = { | |
45 NGX_MODULE_V1, | |
46 &ngx_http_flv_module_ctx, /* module context */ | |
47 ngx_http_flv_commands, /* module directives */ | |
48 NGX_HTTP_MODULE, /* module type */ | |
49 NULL, /* init master */ | |
50 NULL, /* init module */ | |
51 NULL, /* init process */ | |
52 NULL, /* init thread */ | |
53 NULL, /* exit thread */ | |
54 NULL, /* exit process */ | |
55 NULL, /* exit master */ | |
56 NGX_MODULE_V1_PADDING | |
57 }; | |
58 | |
59 | |
60 static ngx_int_t | |
61 ngx_http_flv_handler(ngx_http_request_t *r) | |
62 { | |
2415 | 63 u_char *last; |
753 | 64 off_t start, len; |
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65 size_t root; |
753 | 66 ngx_int_t rc; |
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67 ngx_uint_t level, i; |
2415 | 68 ngx_str_t path, value; |
753 | 69 ngx_log_t *log; |
70 ngx_buf_t *b; | |
71 ngx_chain_t out[2]; | |
1454 | 72 ngx_open_file_info_t of; |
753 | 73 ngx_http_core_loc_conf_t *clcf; |
74 | |
75 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { | |
76 return NGX_HTTP_NOT_ALLOWED; | |
77 } | |
78 | |
79 if (r->uri.data[r->uri.len - 1] == '/') { | |
80 return NGX_DECLINED; | |
81 } | |
82 | |
83 if (r->zero_in_uri) { | |
84 return NGX_DECLINED; | |
85 } | |
86 | |
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87 rc = ngx_http_discard_request_body(r); |
753 | 88 |
1374 | 89 if (rc != NGX_OK) { |
753 | 90 return rc; |
91 } | |
92 | |
1454 | 93 last = ngx_http_map_uri_to_path(r, &path, &root, 0); |
94 if (last == NULL) { | |
753 | 95 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
96 } | |
97 | |
98 log = r->connection->log; | |
99 | |
1454 | 100 path.len = last - path.data; |
753 | 101 |
1454 | 102 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, |
103 "http flv filename: \"%V\"", &path); | |
104 | |
105 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
753 | 106 |
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107 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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108 |
3178 | 109 of.read_ahead = clcf->read_ahead; |
2129 | 110 of.directio = clcf->directio; |
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111 of.valid = clcf->open_file_cache_valid; |
1772 | 112 of.min_uses = clcf->open_file_cache_min_uses; |
1454 | 113 of.errors = clcf->open_file_cache_errors; |
1457 | 114 of.events = clcf->open_file_cache_events; |
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115 |
1799 | 116 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
117 != NGX_OK) | |
118 { | |
1454 | 119 switch (of.err) { |
120 | |
121 case 0: | |
122 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
123 | |
124 case NGX_ENOENT: | |
125 case NGX_ENOTDIR: | |
126 case NGX_ENAMETOOLONG: | |
127 | |
753 | 128 level = NGX_LOG_ERR; |
129 rc = NGX_HTTP_NOT_FOUND; | |
1454 | 130 break; |
753 | 131 |
1454 | 132 case NGX_EACCES: |
133 | |
753 | 134 level = NGX_LOG_ERR; |
135 rc = NGX_HTTP_FORBIDDEN; | |
1454 | 136 break; |
753 | 137 |
1454 | 138 default: |
139 | |
753 | 140 level = NGX_LOG_CRIT; |
141 rc = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
1454 | 142 break; |
753 | 143 } |
144 | |
145 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) { | |
1454 | 146 ngx_log_error(level, log, of.err, |
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147 "%s \"%s\" failed", of.failed, path.data); |
753 | 148 } |
149 | |
150 return rc; | |
151 } | |
152 | |
1454 | 153 if (!of.is_file) { |
753 | 154 |
1696 | 155 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) { |
753 | 156 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
157 ngx_close_file_n " \"%s\" failed", path.data); | |
158 } | |
159 | |
160 return NGX_DECLINED; | |
161 } | |
162 | |
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163 r->root_tested = !r->error_page; |
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164 |
753 | 165 start = 0; |
1454 | 166 len = of.size; |
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167 i = 1; |
753 | 168 |
169 if (r->args.len) { | |
170 | |
2415 | 171 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) { |
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172 |
2415 | 173 start = ngx_atoof(value.data, value.len); |
753 | 174 |
175 if (start == NGX_ERROR || start >= len) { | |
176 start = 0; | |
177 } | |
178 | |
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179 if (start) { |
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180 len = sizeof(ngx_flv_header) - 1 + len - start; |
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181 i = 0; |
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182 } |
753 | 183 } |
184 } | |
185 | |
186 log->action = "sending flv to client"; | |
187 | |
188 r->headers_out.status = NGX_HTTP_OK; | |
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189 r->headers_out.content_length_n = len; |
1454 | 190 r->headers_out.last_modified_time = of.mtime; |
753 | 191 |
192 if (ngx_http_set_content_type(r) != NGX_OK) { | |
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193 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
753 | 194 } |
195 | |
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196 if (i == 0) { |
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197 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); |
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198 if (b == NULL) { |
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199 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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200 } |
753 | 201 |
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202 b->pos = ngx_flv_header; |
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203 b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1; |
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204 b->memory = 1; |
753 | 205 |
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206 out[0].buf = b; |
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207 out[0].next = &out[1]; |
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208 } |
753 | 209 |
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210 |
753 | 211 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); |
212 if (b == NULL) { | |
213 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
214 } | |
215 | |
216 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); | |
217 if (b->file == NULL) { | |
218 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
219 } | |
220 | |
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221 r->allow_ranges = 1; |
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222 |
753 | 223 rc = ngx_http_send_header(r); |
224 | |
225 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
226 return rc; | |
227 } | |
228 | |
229 b->file_pos = start; | |
1454 | 230 b->file_last = of.size; |
753 | 231 |
232 b->in_file = b->file_last ? 1: 0; | |
233 b->last_buf = 1; | |
234 b->last_in_chain = 1; | |
235 | |
1696 | 236 b->file->fd = of.fd; |
753 | 237 b->file->name = path; |
238 b->file->log = log; | |
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239 b->file->directio = of.is_directio; |
753 | 240 |
241 out[1].buf = b; | |
242 out[1].next = NULL; | |
243 | |
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244 return ngx_http_output_filter(r, &out[i]); |
753 | 245 } |
246 | |
247 | |
248 static char * | |
249 ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
250 { | |
251 ngx_http_core_loc_conf_t *clcf; | |
252 | |
253 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
254 clcf->handler = ngx_http_flv_handler; | |
255 | |
256 return NGX_CONF_OK; | |
257 } |