forked from kaltura/nginx-vod-module
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ngx_http_vod_thumb.c
255 lines (218 loc) · 6.92 KB
/
ngx_http_vod_thumb.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
#include <ngx_http.h>
#if (NGX_HAVE_LIB_AV_CODEC)
#include "ngx_http_vod_submodule.h"
#include "ngx_http_vod_utils.h"
#include "vod/thumb/thumb_grabber.h"
#include "vod/manifest_utils.h"
#define THUMB_TIMESCALE (1000)
static const u_char jpg_file_ext[] = ".jpg";
static u_char jpeg_content_type[] = "image/jpeg";
ngx_int_t
ngx_http_vod_thumb_get_url(
ngx_http_vod_submodule_context_t* submodule_context,
uint32_t sequences_mask,
ngx_str_t* result)
{
ngx_http_vod_loc_conf_t* conf = submodule_context->conf;
ngx_http_request_t* r = submodule_context->r;
request_params_t* request_params = &submodule_context->request_params;
ngx_str_t request_params_str;
ngx_str_t base_url = ngx_null_string;
vod_status_t rc;
size_t result_size;
u_char* p;
// get the base url
rc = ngx_http_vod_get_base_url(
r,
conf->segments_base_url != NULL ? conf->segments_base_url : conf->base_url,
&r->uri,
&base_url);
if (rc != VOD_OK)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_get_url: ngx_http_vod_get_base_url failed %i", rc);
return rc;
}
// get the request params string
rc = manifest_utils_build_request_params_string(
&submodule_context->request_context,
request_params->tracks_mask,
INVALID_SEGMENT_INDEX,
sequences_mask,
NULL,
request_params->tracks_mask,
&request_params_str);
if (rc != VOD_OK)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_get_url: manifest_utils_build_request_params_string failed %i", rc);
return ngx_http_vod_status_to_ngx_error(r, rc);
}
// get the result size
result_size = base_url.len + conf->thumb.file_name_prefix.len +
1 + VOD_INT64_LEN + request_params_str.len + sizeof(jpg_file_ext) - 1;
// allocate the result buffer
p = ngx_pnalloc(submodule_context->request_context.pool, result_size);
if (p == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_get_url: ngx_pnalloc failed");
return ngx_http_vod_status_to_ngx_error(r, VOD_ALLOC_FAILED);
}
result->data = p;
// write the result
if (base_url.len != 0)
{
p = vod_copy(p, base_url.data, base_url.len);
}
p = vod_copy(p, conf->thumb.file_name_prefix.data, conf->thumb.file_name_prefix.len);
p = vod_sprintf(p, "-%uL", request_params->segment_time);
p = vod_copy(p, request_params_str.data, request_params_str.len);
p = vod_copy(p, jpg_file_ext, sizeof(jpg_file_ext) - 1);
result->len = p - result->data;
if (result->len > result_size)
{
vod_log_error(VOD_LOG_ERR, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_get_url: result length %uz exceeded allocated length %uz",
result->len, result_size);
return ngx_http_vod_status_to_ngx_error(r, VOD_UNEXPECTED);
}
return NGX_OK;
}
static ngx_int_t
ngx_http_vod_thumb_init_frame_processor(
ngx_http_vod_submodule_context_t* submodule_context,
segment_writer_t* segment_writer,
ngx_http_vod_frame_processor_t* frame_processor,
void** frame_processor_state,
ngx_str_t* output_buffer,
size_t* response_size,
ngx_str_t* content_type)
{
vod_status_t rc;
rc = thumb_grabber_init_state(
&submodule_context->request_context,
submodule_context->media_set.filtered_tracks,
submodule_context->request_params.segment_time,
submodule_context->conf->thumb.accurate,
segment_writer->write_tail,
segment_writer->context,
frame_processor_state);
if (rc != VOD_OK)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_init_frame_processor: thumb_grabber_init_state failed %i", rc);
return ngx_http_vod_status_to_ngx_error(submodule_context->r, rc);
}
*frame_processor = (ngx_http_vod_frame_processor_t)thumb_grabber_process;
content_type->len = sizeof(jpeg_content_type) - 1;
content_type->data = (u_char *)jpeg_content_type;
return NGX_OK;
}
static const ngx_http_vod_request_t thumb_request = {
REQUEST_FLAG_SINGLE_TRACK,
PARSE_FLAG_FRAMES_ALL | PARSE_FLAG_EXTRA_DATA,
REQUEST_CLASS_THUMB,
VOD_CODEC_FLAG(AVC) | VOD_CODEC_FLAG(HEVC) | VOD_CODEC_FLAG(VP8) | VOD_CODEC_FLAG(VP9),
THUMB_TIMESCALE,
NULL,
ngx_http_vod_thumb_init_frame_processor,
};
void
ngx_http_vod_thumb_create_loc_conf(
ngx_conf_t *cf,
ngx_http_vod_thumb_loc_conf_t *conf)
{
conf->accurate = NGX_CONF_UNSET;
}
static char *
ngx_http_vod_thumb_merge_loc_conf(
ngx_conf_t *cf,
ngx_http_vod_loc_conf_t *base,
ngx_http_vod_thumb_loc_conf_t *conf,
ngx_http_vod_thumb_loc_conf_t *prev)
{
ngx_conf_merge_str_value(conf->file_name_prefix, prev->file_name_prefix, "thumb");
ngx_conf_merge_value(conf->accurate, prev->accurate, 1);
return NGX_CONF_OK;
}
static int
ngx_http_vod_thumb_get_file_path_components(ngx_str_t* uri)
{
return 1;
}
static ngx_int_t
ngx_http_vod_thumb_parse_uri_file_name(
ngx_http_request_t *r,
ngx_http_vod_loc_conf_t *conf,
u_char* start_pos,
u_char* end_pos,
request_params_t* request_params,
const ngx_http_vod_request_t** request)
{
bool_t negative;
int64_t time;
ngx_int_t rc;
if (ngx_http_vod_match_prefix_postfix(start_pos, end_pos, &conf->thumb.file_name_prefix, jpg_file_ext))
{
start_pos += conf->thumb.file_name_prefix.len;
end_pos -= (sizeof(jpg_file_ext) - 1);
*request = &thumb_request;
}
else
{
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"ngx_http_vod_thumb_parse_uri_file_name: unidentified request");
return ngx_http_vod_status_to_ngx_error(r, VOD_BAD_REQUEST);
}
// parse the time
if (start_pos < end_pos && *start_pos == '-')
{
start_pos++; // skip the -
}
negative = 0;
if (start_pos < end_pos && *start_pos == '-')
{
start_pos++; // skip the -
negative = 1;
}
if (start_pos >= end_pos || *start_pos < '0' || *start_pos > '9')
{
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"ngx_http_vod_thumb_parse_uri_file_name: failed to parse thumbnail time");
return ngx_http_vod_status_to_ngx_error(r, VOD_BAD_REQUEST);
}
time = 0;
do
{
time = time * 10 + *start_pos++ - '0';
} while (start_pos < end_pos && *start_pos >= '0' && *start_pos <= '9');
if (negative)
{
time = -time;
}
// parse the required tracks string
rc = ngx_http_vod_parse_uri_file_name(r, start_pos, end_pos, 0, request_params);
if (rc != NGX_OK)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"ngx_http_vod_thumb_parse_uri_file_name: ngx_http_vod_parse_uri_file_name failed %i", rc);
return rc;
}
request_params->segment_time = time;
request_params->tracks_mask[MEDIA_TYPE_AUDIO] = 0;
request_params->tracks_mask[MEDIA_TYPE_SUBTITLE] = 0;
return NGX_OK;
}
ngx_int_t
ngx_http_vod_thumb_parse_drm_info(
ngx_http_vod_submodule_context_t* submodule_context,
ngx_str_t* drm_info,
void** output)
{
ngx_log_error(NGX_LOG_ERR, submodule_context->request_context.log, 0,
"ngx_http_vod_thumb_parse_drm_info: unexpected - drm enabled on thumbnail request");
return ngx_http_vod_status_to_ngx_error(submodule_context->r, VOD_BAD_REQUEST);
}
DEFINE_SUBMODULE(thumb);
#endif // (NGX_HAVE_LIB_AV_CODEC)