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
|
/*
* FIFO test pseudo-muxer
* Copyright (c) 2016 Jan Sebechlebsky
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FFmpeg; if not, write to the Free Software * Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/avassert.h"
#include "avformat.h"
#include "url.h"
/* Implementation of mock muxer to simulate real muxer failures */
#define MAX_TST_PACKETS 128
#define SLEEPTIME_50_MS 50000
#define SLEEPTIME_10_MS 10000
/* Implementation of mock muxer to simulate real muxer failures */
/* This is structure of data sent in packets to
* failing muxer */
typedef struct FailingMuxerPacketData {
int ret; /* return value of write_packet call*/
int recover_after; /* set ret to zero after this number of recovery attempts */
unsigned sleep_time; /* sleep for this long in write_packet to simulate long I/O operation */
} FailingMuxerPacketData;
typedef struct FailingMuxerContext {
AVClass *class;
int write_header_ret;
int write_trailer_ret;
/* If non-zero, summary of processed packets will be printed in deinit */
int print_deinit_summary;
int flush_count;
int pts_written[MAX_TST_PACKETS];
int pts_written_nr;
} FailingMuxerContext;
static int failing_write_header(AVFormatContext *avf)
{
FailingMuxerContext *ctx = avf->priv_data;
return ctx->write_header_ret;
}
static int failing_write_packet(AVFormatContext *avf, AVPacket *pkt)
{
FailingMuxerContext *ctx = avf->priv_data;
int ret = 0;
if (!pkt) {
ctx->flush_count++;
} else {
FailingMuxerPacketData *data = (FailingMuxerPacketData*) pkt->data;
if (!data->recover_after) {
data->ret = 0;
} else {
data->recover_after--;
}
ret = data->ret;
if (data->sleep_time) {
int64_t slept = 0;
while (slept < data->sleep_time) {
if (ff_check_interrupt(&avf->interrupt_callback))
return AVERROR_EXIT;
av_usleep(SLEEPTIME_10_MS);
slept += SLEEPTIME_10_MS;
}
}
if (!ret) {
ctx->pts_written[ctx->pts_written_nr++] = pkt->pts;
av_packet_unref(pkt);
}
}
return ret;
}
static int failing_write_trailer(AVFormatContext *avf)
{
FailingMuxerContext *ctx = avf->priv_data;
return ctx->write_trailer_ret;
}
static void failing_deinit(AVFormatContext *avf)
{
int i;
FailingMuxerContext *ctx = avf->priv_data;
if (!ctx->print_deinit_summary)
return;
printf("flush count: %d\n", ctx->flush_count);
printf("pts seen nr: %d\n", ctx->pts_written_nr);
printf("pts seen: ");
for (i = 0; i < ctx->pts_written_nr; ++i ) {
printf(i ? ",%d" : "%d", ctx->pts_written[i]);
}
printf("\n");
}
#define OFFSET(x) offsetof(FailingMuxerContext, x)
static const AVOption options[] = {
{"write_header_ret", "write_header() return value", OFFSET(write_header_ret),
AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{"write_trailer_ret", "write_trailer() return value", OFFSET(write_trailer_ret),
AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{"print_deinit_summary", "print summary when deinitializing muxer", OFFSET(print_deinit_summary),
AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{NULL}
};
static const AVClass failing_muxer_class = {
.class_name = "Fifo test muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_fifo_test_muxer = {
.name = "fifo_test",
.long_name = NULL_IF_CONFIG_SMALL("Fifo test muxer"),
.priv_data_size = sizeof(FailingMuxerContext),
.write_header = failing_write_header,
.write_packet = failing_write_packet,
.write_trailer = failing_write_trailer,
.deinit = failing_deinit,
.priv_class = &failing_muxer_class,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
};
|
