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/*
* 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 "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,
};
const 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,
};
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