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
|
/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <libavformat/avformat.h>
#include <libavformat/avio.h>
#include <libavutil/opt.h>
#include "config.h"
#include "core/mp_msg.h"
#include "stream.h"
#include "core/m_option.h"
#include "core/m_struct.h"
#include "demux/demux.h"
#include "network.h"
#include "cookies.h"
static int open_f(stream_t *stream, int mode, void *opts, int *file_format);
static int fill_buffer(stream_t *s, char *buffer, int max_len)
{
AVIOContext *avio = s->priv;
if (!avio)
return -1;
int r = avio_read(avio, buffer, max_len);
return (r <= 0) ? -1 : r;
}
static int write_buffer(stream_t *s, char *buffer, int len)
{
AVIOContext *avio = s->priv;
if (!avio)
return -1;
avio_write(avio, buffer, len);
avio_flush(avio);
if (avio->error)
return -1;
return len;
}
static int seek(stream_t *s, int64_t newpos)
{
AVIOContext *avio = s->priv;
if (!avio)
return -1;
s->pos = newpos;
if (avio_seek(avio, s->pos, SEEK_SET) < 0) {
s->eof = 1;
return 0;
}
return 1;
}
static void close_f(stream_t *stream)
{
AVIOContext *avio = stream->priv;
/* NOTE: As of 2011 write streams must be manually flushed before close.
* Currently write_buffer() always flushes them after writing.
* avio_close() could return an error, but we have no way to return that
* with the current stream API.
*/
if (avio)
avio_close(avio);
}
static int control(stream_t *s, int cmd, void *arg)
{
AVIOContext *avio = s->priv;
if (!avio && cmd != STREAM_CTRL_RECONNECT)
return -1;
int64_t size, ts;
double pts;
switch(cmd) {
case STREAM_CTRL_GET_SIZE:
size = avio_size(avio);
if(size >= 0) {
*(uint64_t *)arg = size;
return 1;
}
break;
case STREAM_CTRL_SEEK_TO_TIME:
pts = *(double *)arg;
ts = pts * AV_TIME_BASE;
ts = avio_seek_time(avio, -1, ts, 0);
if (ts >= 0)
return 1;
break;
case STREAM_CTRL_RECONNECT: {
if (avio && avio->write_flag)
break; // don't bother with this
// avio doesn't seem to support this - emulate it by reopening
close_f(s);
s->priv = NULL;
return open_f(s, STREAM_READ, NULL, &(int) {0});
}
}
return STREAM_UNSUPPORTED;
}
static const char * const prefix[] = { "lavf://", "ffmpeg://" };
static int open_f(stream_t *stream, int mode, void *opts, int *file_format)
{
int flags = 0;
AVIOContext *avio = NULL;
int res = STREAM_ERROR;
AVDictionary *dict = NULL;
void *temp = talloc_new(NULL);
if (mode == STREAM_READ)
flags = AVIO_FLAG_READ;
else if (mode == STREAM_WRITE)
flags = AVIO_FLAG_WRITE;
else {
mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] Unknown open mode %d\n", mode);
res = STREAM_UNSUPPORTED;
goto out;
}
const char *filename = stream->url;
if (!filename) {
mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] No URL\n");
goto out;
}
for (int i = 0; i < sizeof(prefix) / sizeof(prefix[0]); i++)
if (!strncmp(filename, prefix[i], strlen(prefix[i])))
filename += strlen(prefix[i]);
if (!strncmp(filename, "rtsp:", 5)) {
/* This is handled as a special demuxer, without a separate
* stream layer. demux_lavf will do all the real work.
*/
stream->type = STREAMTYPE_STREAM;
stream->seek = NULL;
*file_format = DEMUXER_TYPE_LAVF;
stream->lavf_type = "rtsp";
return STREAM_OK;
}
mp_msg(MSGT_OPEN, MSGL_V, "[ffmpeg] Opening %s\n", filename);
// Replace "mms://" with "mmsh://", so that most mms:// URLs just work.
bstr b_filename = bstr0(filename);
if (bstr_eatstart0(&b_filename, "mms://") ||
bstr_eatstart0(&b_filename, "mmshttp://"))
{
filename = talloc_asprintf(temp, "mmsh://%.*s", BSTR_P(b_filename));
}
#ifdef CONFIG_NETWORKING
// HTTP specific options (other protocols ignore them)
if (network_useragent)
av_dict_set(&dict, "user-agent", network_useragent, 0);
if (network_cookies_enabled)
av_dict_set(&dict, "cookies", talloc_steal(temp, cookies_lavf()), 0);
char *cust_headers = talloc_strdup(temp, "");
if (network_referrer) {
cust_headers = talloc_asprintf_append(cust_headers, "Referer: %s\r\n",
network_referrer);
}
if (network_http_header_fields) {
for (int n = 0; network_http_header_fields[n]; n++) {
cust_headers = talloc_asprintf_append(cust_headers, "%s\r\n",
network_http_header_fields[n]);
}
}
if (strlen(cust_headers))
av_dict_set(&dict, "headers", cust_headers, 0);
#endif
int err = avio_open2(&avio, filename, flags, NULL, &dict);
if (err < 0) {
if (err == AVERROR_PROTOCOL_NOT_FOUND)
mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] Protocol not found. Make sure"
" ffmpeg/Libav is compiled with networking support.\n");
goto out;
}
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(54, 0, 0)
if (avio->av_class) {
uint8_t *mt = NULL;
if (av_opt_get(avio, "mime_type", AV_OPT_SEARCH_CHILDREN, &mt) >= 0)
stream->mime_type = talloc_strdup(stream, mt);
}
#endif
char *rtmp[] = {"rtmp:", "rtmpt:", "rtmpe:", "rtmpte:", "rtmps:"};
for (int i = 0; i < FF_ARRAY_ELEMS(rtmp); i++)
if (!strncmp(filename, rtmp[i], strlen(rtmp[i]))) {
*file_format = DEMUXER_TYPE_LAVF;
stream->lavf_type = "flv";
}
stream->priv = avio;
int64_t size = avio_size(avio);
if (size >= 0)
stream->end_pos = size;
stream->type = STREAMTYPE_FILE;
stream->seek = seek;
if (!avio->seekable) {
stream->type = STREAMTYPE_STREAM;
stream->seek = NULL;
}
stream->fill_buffer = fill_buffer;
stream->write_buffer = write_buffer;
stream->control = control;
stream->close = close_f;
// enable cache (should be avoided for files, but no way to detect this)
stream->streaming = true;
res = STREAM_OK;
out:
av_dict_free(&dict);
talloc_free(temp);
return res;
}
const stream_info_t stream_info_ffmpeg = {
"FFmpeg",
"ffmpeg",
"",
"",
open_f,
{ "lavf", "ffmpeg", "rtmp", "rtsp", "http", "https", "mms", "mmst", "mmsh",
"mmshttp", NULL },
NULL,
1 // Urls are an option string
};
|
