aboutsummaryrefslogtreecommitdiffstats
path: root/bindings/media/media-api.c
blob: 39c2e2c9776448cb23f4a67e204978e34b683140 (plain)
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
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
/*
 * Copyright (C) 2016 "IoT.bzh"
 * Author "Manuel Bachmann"
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define _GNU_SOURCE

#include <string.h>

#include <json-c/json.h>

#include "media-api.h"
#include "media-rygel.h"

#include <afb/afb-binding.h>
#include <afb/afb-req-itf.h>

json_object* _rygel_list (mediaCtxHandleT *);

/* ------ LOCAL HELPER FUNCTIONS --------- */

/* private client context creation ; default values */
static mediaCtxHandleT* initMediaCtx () {

    mediaCtxHandleT *ctx;

    ctx = malloc (sizeof(mediaCtxHandleT));
    ctx->media_server = NULL;
    ctx->index = 0;

    return ctx;
}

/* ------ PUBLIC PLUGIN FUNCTIONS --------- */

static void init (struct afb_req request) {        /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    json_object *jresp;

    /* create a private client context */
    if (!ctx) {
        ctx = initMediaCtx();
        afb_req_context_set (request, ctx, free);
    }

    /* initialize server connection */
    if (!ctx->media_server)
      _rygel_init (ctx);

    jresp = json_object_new_object ();
    json_object_object_add (jresp, "init", json_object_new_string ("success"));
    afb_req_success (request, jresp, "Media - Initialized");
}

static void list (struct afb_req request) {        /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    json_object *jresp;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    jresp = _rygel_list (ctx);

    if (!jresp) {
      afb_req_fail (request, "failed", "no content found in media server");
      return;
    }

    afb_req_success (request, jresp, "Media - Listed");
}

static void selecting (struct afb_req request) {   /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    const char *value = afb_req_value (request, "value");
    json_object *jresp;
    unsigned int index;
    char index_str[5];

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    /* no "?value=" parameter : return current index */
    if (!value) {
        snprintf (index_str, sizeof(index_str), "%d", ctx->index);
        jresp = json_object_new_object();
        json_object_object_add (jresp, "index", json_object_new_string (index_str));
    }

    /* "?value=" parameter is negative */
    else if (atoi(value) < 0) {
        afb_req_fail (request, "failed", "chosen index cannot be negative");
        return;
    }

    /* "?value=" parameter is positive */
    else if (atoi(value) >= 0) {
        index = (unsigned int) atoi(value);

        if (!_rygel_select (ctx, index)) {
          afb_req_fail (request, "failed", "chosen index superior to current media count");
          return;
        }

        ctx->index = index;
        jresp = json_object_new_object();
        json_object_object_add (jresp, "index", json_object_new_string (value));
    }
    else
        jresp = NULL;

    afb_req_success (request, jresp, "Media - Listed");
}

static void play (struct afb_req request) {        /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    json_object *jresp;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    if (!_rygel_do (ctx, PLAY, NULL)) {
      afb_req_fail (request, "failed", "could not play chosen media");
      return;
    }

    jresp = json_object_new_object ();
    json_object_object_add (jresp, "play", json_object_new_string ("success"));
    afb_req_success (request, jresp, "Media - Listed");
}

static void stop (struct afb_req request) {        /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    json_object *jresp;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    if (!_rygel_do (ctx, STOP, NULL)) {
      afb_req_fail (request, "failed", "could not stop chosen media");
      return;
    }

    jresp = json_object_new_object ();
    json_object_object_add (jresp, "stop", json_object_new_string ("success"));
    afb_req_success (request, jresp, "Media - Stopped");
}

static void pausing (struct afb_req request) {     /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    json_object *jresp;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    if (!_rygel_do (ctx, PAUSE, NULL)) {
      afb_req_fail (request, "failed", "could not pause chosen media");
      return;
    }

    jresp = json_object_new_object();
    json_object_object_add (jresp, "pause", json_object_new_string ("success"));
    afb_req_success (request, jresp, "Media - Paused");
}

static void seek (struct afb_req request) {        /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    const char *value = afb_req_value (request, "value");
    json_object *jresp;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    /* no "?value=" parameter : return error */
    if (!value) {
      afb_req_fail (request, "failed", "you must provide a time");
      return;
    }

    if (!_rygel_do (ctx, SEEK, (char *)value)) {
      afb_req_fail (request, "failed", "could not seek chosen media");
      return;
    }

    jresp = json_object_new_object();
    json_object_object_add (jresp, "seek", json_object_new_string ("success"));
    afb_req_success (request, jresp, "Media - Sought");
}

static char *renamed_filename(struct afb_arg argfile)
{
    char *result;
    const char *e = strrchr(argfile.path, '/');
    if (e == NULL)
        result = strdup(argfile.value);
    else {
        result = malloc((++e - argfile.path) + strlen(argfile.value) + 1);
        if (result != NULL)
            strcpy(stpncpy(result, argfile.path, e - argfile.path), argfile.value);
    }
    return result;
}

static void on_uploaded(struct afb_req *prequest, int status)
{
    struct afb_req request = afb_req_unstore(prequest);
    struct afb_arg argfile = afb_req_get(request, "file-upload");
    char *file = renamed_filename(argfile);
    if (file != NULL)
        unlink(file);
    free(file);
    if (status)
        afb_req_fail (request, "failed", "expected file not received");
    else
        afb_req_success_f (request, NULL, "uploaded file %s", argfile.value);
   afb_req_unref(request);
}

static void upload (struct afb_req request) { /* AFB_SESSION_CHECK */

    mediaCtxHandleT *ctx = afb_req_context_get(request);
    struct afb_req *prequest;
    struct afb_arg argfile;
    char *path;

    /* check that context is initialized */
    if (ctx == NULL) {
      afb_req_fail (request, "failed", "uninitialized");
      return;
    }

    /* get the file */
    argfile = afb_req_get(request, "file-upload");
    if (!argfile.value || !argfile.path) {
        afb_req_fail (request, "failed", "expected file not received");
        return;
    }

    /* rename the file */
    path = renamed_filename(argfile);
    if (path == NULL) {
        afb_req_fail (request, "failed", "out of memory");
        return;
    }
    if (rename(argfile.path, path) != 0) {
        free(path);
        afb_req_fail (request, "failed", "system error");
        return;
    }

    /* for asynchronous processing */
    prequest = afb_req_store(request);
    if (path == NULL) {
        unlink(path);
        afb_req_fail (request, "failed", "out of memory");
    }
    else if (!_rygel_upload (ctx, path, (void*)on_uploaded, prequest)) {
        afb_req_unref(afb_req_unstore(prequest));
        unlink(path);
        afb_req_fail (request, "failed", "Error when uploading file to media server... could not complete");
    }
    free(path);
}

static void ping (struct afb_req request) {         /* AFB_SESSION_NONE */
    afb_req_success (request, NULL, "Media - Ping succeeded");
}


static const struct afb_verb_desc_v1 verbs[]= {
  {"init"   , AFB_SESSION_CHECK,  init       , "Media API - init"   },
  {"list"   , AFB_SESSION_CHECK,  list       , "Media API - list"   },
  {"select" , AFB_SESSION_CHECK,  selecting  , "Media API - select" },
  {"play"   , AFB_SESSION_CHECK,  play       , "Media API - play"   },
  {"stop"   , AFB_SESSION_CHECK,  stop       , "Media API - stop"   },
  {"pause"  , AFB_SESSION_CHECK,  pausing    , "Media API - pause"  },
  {"seek"   , AFB_SESSION_CHECK,  seek       , "Media API - seek"   },
//  {"upload" , AFB_SESSION_CHECK,  upload     , "Media API - upload" },
  {"ping"   , AFB_SESSION_NONE,   ping       , "Media API - ping"   },
  {NULL}
};

static const struct afb_binding pluginDesc = {
    .type   = AFB_BINDING_VERSION_1,
    .v1 = {
        .info   = "Application Framework Binder - Media plugin",
        .prefix = "media",
        .verbs   = verbs
    }
};

const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf)
{
    return &pluginDesc;
}