virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avformat: Add fifo pseudo-muxer

Browse Source 
Signed-off-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Jan Sebechlebsky 2016-08-09 13:26:03 +02:00 committed by Marton Balint
parent 360d3f3c18
commit 92b5f8fecd
7 changed files with 761 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Changelog
View File

@ -17,6 +17,7 @@ version <next>:
- acrusher audio filter
- bitplanenoise video filter
- floating point support in als decoder
- fifo muxer
version 3.1:

1
configure vendored
View File

@ -2834,6 +2834,7 @@ dv_muxer_select="dvprofile"
dxa_demuxer_select="riffdec"
eac3_demuxer_select="ac3_parser"
f4v_muxer_select="mov_muxer"
fifo_muxer_deps="pthreads"
flac_demuxer_select="flac_parser"
hds_muxer_select="flv_muxer"
hls_muxer_select="mpegts_muxer"

95
doc/muxers.texi
View File

@ -1440,6 +1440,101 @@ Specify whether to remove all fragments when finished. Default 0 (do not remove)
@end table
@section fifo
The fifo pseudo-muxer allows the separation of encoding and muxing by using
first-in-first-out queue and running the actual muxer in a separate thread. This
is especially useful in combination with the @ref{tee} muxer and can be used to
send data to several destinations with different reliability/writing speed/latency.
API users should be aware that callback functions (interrupt_callback,
io_open and io_close) used within its AVFormatContext must be thread-safe.
The behavior of the fifo muxer if the queue fills up or if the output fails is
selectable,
@itemize @bullet
@item
output can be transparently restarted with configurable delay between retries
based on real time or time of the processed stream.
@item
encoding can be blocked during temporary failure, or continue transparently
dropping packets in case fifo queue fills up.
@end itemize
@table @option
@item fifo_format
Specify the format name. Useful if it cannot be guessed from the
output name suffix.
@item queue_size
Specify size of the queue (number of packets). Default value is 60.
@item format_opts
Specify format options for the underlying muxer. Muxer options can be specified
as a list of @var{key}=@var{value} pairs separated by ':'.
@item drop_pkts_on_overflow @var{bool}
If set to 1 (true), in case the fifo queue fills up, packets will be dropped
rather than blocking the encoder. This allows to continue streaming without
delaying the input, at the cost of ommiting part of the stream. By default
this option is set to 0 (false), so in such cases the encoder will be blocked
until the muxer processes some of the packets and none of them is lost.
@item attempt_recovery @var{bool}
If failure occurs, attempt to recover the output. This is especially useful
when used with network output, allows to restart streaming transparently.
By default this option is set to 0 (false).
@item max_recovery_attempts
Sets maximum number of successive unsuccessful recovery attempts after which
the output fails permanently. By default this option is set to 0 (unlimited).
@item recovery_wait_time @var{duration}
Waiting time before the next recovery attempt after previous unsuccessful
recovery attempt. Default value is 5 seconds.
@item recovery_wait_streamtime @var{bool}
If set to 0 (false), the real time is used when waiting for the recovery
attempt (i.e. the recovery will be attempted after at least
recovery_wait_time seconds).
If set to 1 (true), the time of the processed stream is taken into account
instead (i.e. the recovery will be attempted after at least @var{recovery_wait_time}
seconds of the stream is omitted).
By default, this option is set to 0 (false).
@item recover_any_error @var{bool}
If set to 1 (true), recovery will be attempted regardless of type of the error
causing the failure. By default this option is set to 0 (false) and in case of
certain (usually permanent) errors the recovery is not attempted even when
@var{attempt_recovery} is set to 1.
@item restart_with_keyframe @var{bool}
Specify whether to wait for the keyframe after recovering from
queue overflow or failure. This option is set to 0 (false) by default.
@end table
@subsection Examples
@itemize
@item
Stream something to rtmp server, continue processing the stream at real-time
rate even in case of temporary failure (network outage) and attempt to recover
streaming every second indefinitely.
@example
ffmpeg -re -i ... -c:v libx264 -c:a aac -f fifo -fifo_format flv -map 0:v -map 0:a
-drop_pkts_on_overflow 1 -attempt_recovery 1 -recovery_wait_time 1 rtmp://example.com/live/stream_name
@end example
@end itemize
@anchor{tee}
@section tee
The tee muxer can be used to write the same data to several files or any

1
libavformat/Makefile
View File

@ -162,6 +162,7 @@ OBJS-$(CONFIG_FFM_DEMUXER) += ffmdec.o
OBJS-$(CONFIG_FFM_MUXER) += ffmenc.o
OBJS-$(CONFIG_FFMETADATA_DEMUXER) += ffmetadec.o
OBJS-$(CONFIG_FFMETADATA_MUXER) += ffmetaenc.o
OBJS-$(CONFIG_FIFO_MUXER) += fifo.o
OBJS-$(CONFIG_FILMSTRIP_DEMUXER) += filmstripdec.o
OBJS-$(CONFIG_FILMSTRIP_MUXER) += filmstripenc.o
OBJS-$(CONFIG_FLAC_DEMUXER) += flacdec.o rawdec.o \

1
libavformat/allformats.c
View File

@ -123,6 +123,7 @@ void av_register_all(void)
REGISTER_MUXER (F4V, f4v);
REGISTER_MUXDEMUX(FFM, ffm);
REGISTER_MUXDEMUX(FFMETADATA, ffmetadata);
REGISTER_MUXER (FIFO, fifo);
REGISTER_MUXDEMUX(FILMSTRIP, filmstrip);
REGISTER_MUXDEMUX(FLAC, flac);
REGISTER_DEMUXER (FLIC, flic);

660
libavformat/fifo.c Normal file
View File

@ -0,0 +1,660 @@
/*
* FIFO 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 "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/thread.h"
#include "libavutil/threadmessage.h"
#include "avformat.h"
#include "internal.h"
#define FIFO_DEFAULT_QUEUE_SIZE 60
#define FIFO_DEFAULT_MAX_RECOVERY_ATTEMPTS 0
#define FIFO_DEFAULT_RECOVERY_WAIT_TIME_USEC 5000000 // 5 seconds
typedef struct FifoContext {
const AVClass *class;
AVFormatContext *avf;
char *format;
char *format_options_str;
AVDictionary *format_options;
int queue_size;
AVThreadMessageQueue *queue;
pthread_t writer_thread;
/* Return value of last write_trailer_call */
int write_trailer_ret;
/* Time to wait before next recovery attempt
* This can refer to the time in processed stream,
* or real time. */
int64_t recovery_wait_time;
/* Maximal number of unsuccessful successive recovery attempts */
int max_recovery_attempts;
/* Whether to attempt recovery from failure */
int attempt_recovery;
/* If >0 stream time will be used when waiting
* for the recovery attempt instead of real time */
int recovery_wait_streamtime;
/* If >0 recovery will be attempted regardless of error code
* (except AVERROR_EXIT, so exit request is never ignored) */
int recover_any_error;
/* Whether to drop packets in case the queue is full. */
int drop_pkts_on_overflow;
/* Whether to wait for keyframe when recovering
* from failure or queue overflow */
int restart_with_keyframe;
pthread_mutex_t overflow_flag_lock;
/* Value > 0 signals queue overflow */
volatile uint8_t overflow_flag;
} FifoContext;
typedef struct FifoThreadContext {
AVFormatContext *avf;
/* Timestamp of last failure.
* This is either pts in case stream time is used,
* or microseconds as returned by av_getttime_relative() */
int64_t last_recovery_ts;
/* Number of current recovery process
* Value > 0 means we are in recovery process */
int recovery_nr;
/* If > 0 all frames will be dropped until keyframe is received */
uint8_t drop_until_keyframe;
/* Value > 0 means that the previous write_header call was successful
* so finalization by calling write_trailer and ff_io_close must be done
* before exiting / reinitialization of underlying muxer */
uint8_t header_written;
} FifoThreadContext;
typedef enum FifoMessageType {
FIFO_WRITE_HEADER,
FIFO_WRITE_PACKET,
FIFO_FLUSH_OUTPUT
} FifoMessageType;
typedef struct FifoMessage {
FifoMessageType type;
AVPacket pkt;
} FifoMessage;
static int fifo_thread_write_header(FifoThreadContext *ctx)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
AVFormatContext *avf2 = fifo->avf;
AVDictionary *format_options = NULL;
int ret, i;
ret = av_dict_copy(&format_options, fifo->format_options, 0);
if (ret < 0)
return ret;
ret = ff_format_output_open(avf2, avf->filename, &format_options);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR, "Error opening %s: %s\n", avf->filename,
av_err2str(ret));
goto end;
}
for (i = 0;i < avf2->nb_streams; i++)
avf2->streams[i]->cur_dts = 0;
ret = avformat_write_header(avf2, &format_options);
if (!ret)
ctx->header_written = 1;
// Check for options unrecognized by underlying muxer
if (format_options) {
AVDictionaryEntry *entry = NULL;
while ((entry = av_dict_get(format_options, "", entry, AV_DICT_IGNORE_SUFFIX)))
av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
ret = AVERROR(EINVAL);
}
end:
av_dict_free(&format_options);
return ret;
}
static int fifo_thread_flush_output(FifoThreadContext *ctx)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
AVFormatContext *avf2 = fifo->avf;
return av_write_frame(avf2, NULL);
}
static int fifo_thread_write_packet(FifoThreadContext *ctx, AVPacket *pkt)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
AVFormatContext *avf2 = fifo->avf;
AVRational src_tb, dst_tb;
int ret, s_idx;
if (ctx->drop_until_keyframe) {
if (pkt->flags & AV_PKT_FLAG_KEY) {
ctx->drop_until_keyframe = 0;
av_log(avf, AV_LOG_VERBOSE, "Keyframe received, recovering...\n");
} else {
av_log(avf, AV_LOG_VERBOSE, "Dropping non-keyframe packet\n");
av_packet_unref(pkt);
return 0;
}
}
s_idx = pkt->stream_index;
src_tb = avf->streams[s_idx]->time_base;
dst_tb = avf2->streams[s_idx]->time_base;
av_packet_rescale_ts(pkt, src_tb, dst_tb);
ret = av_write_frame(avf2, pkt);
if (ret >= 0)
av_packet_unref(pkt);
return ret;
}
static int fifo_thread_write_trailer(FifoThreadContext *ctx)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
AVFormatContext *avf2 = fifo->avf;
int ret;
if (!ctx->header_written)
return 0;
ret = av_write_trailer(avf2);
ff_format_io_close(avf2, &avf2->pb);
return ret;
}
static int fifo_thread_dispatch_message(FifoThreadContext *ctx, FifoMessage *msg)
{
int ret;
if (!ctx->header_written) {
ret = fifo_thread_write_header(ctx);
if (ret < 0)
return ret;
}
switch(msg->type) {
case FIFO_WRITE_HEADER:
return ret;
case FIFO_WRITE_PACKET:
return fifo_thread_write_packet(ctx, &msg->pkt);
case FIFO_FLUSH_OUTPUT:
return fifo_thread_flush_output(ctx);
}
return AVERROR(EINVAL);
}
static int is_recoverable(const FifoContext *fifo, int err_no) {
if (!fifo->attempt_recovery)
return 0;
if (fifo->recover_any_error)
return err_no != AVERROR_EXIT;
switch (err_no) {
case AVERROR(EINVAL):
case AVERROR(ENOSYS):
case AVERROR_EOF:
case AVERROR_EXIT:
case AVERROR_PATCHWELCOME:
return 0;
default:
return 1;
}
}
static void free_message(void *msg)
{
FifoMessage *fifo_msg = msg;
if (fifo_msg->type == FIFO_WRITE_PACKET)
av_packet_unref(&fifo_msg->pkt);
}
static int fifo_thread_process_recovery_failure(FifoThreadContext *ctx, AVPacket *pkt,
int err_no)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
int ret;
av_log(avf, AV_LOG_INFO, "Recovery failed: %s\n",
av_err2str(err_no));
if (fifo->recovery_wait_streamtime) {
if (pkt->pts == AV_NOPTS_VALUE)
av_log(avf, AV_LOG_WARNING, "Packet does not contain presentation"
" timestamp, recovery will be attempted immediately");
ctx->last_recovery_ts = pkt->pts;
} else {
ctx->last_recovery_ts = av_gettime_relative();
}
if (fifo->max_recovery_attempts &&
ctx->recovery_nr >= fifo->max_recovery_attempts) {
av_log(avf, AV_LOG_ERROR,
"Maximal number of %d recovery attempts reached.\n",
fifo->max_recovery_attempts);
ret = err_no;
} else {
ret = AVERROR(EAGAIN);
}
return ret;
}
static int fifo_thread_attempt_recovery(FifoThreadContext *ctx, FifoMessage *msg, int err_no)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
AVPacket *pkt = &msg->pkt;
int64_t time_since_recovery;
int ret;
if (!is_recoverable(fifo, err_no)) {
ret = err_no;
goto fail;
}
if (ctx->header_written) {
fifo->write_trailer_ret = fifo_thread_write_trailer(ctx);
ctx->header_written = 0;
}
if (!ctx->recovery_nr) {
ctx->last_recovery_ts = fifo->recovery_wait_streamtime ?
AV_NOPTS_VALUE : 0;
} else {
if (fifo->recovery_wait_streamtime) {
if (ctx->last_recovery_ts == AV_NOPTS_VALUE) {
AVRational tb = avf->streams[pkt->stream_index]->time_base;
time_since_recovery = av_rescale_q(pkt->pts - ctx->last_recovery_ts,
tb, AV_TIME_BASE_Q);
} else {
/* Enforce recovery immediately */
time_since_recovery = fifo->recovery_wait_time;
}
} else {
time_since_recovery = av_gettime_relative() - ctx->last_recovery_ts;
}
if (time_since_recovery < fifo->recovery_wait_time)
return AVERROR(EAGAIN);
}
ctx->recovery_nr++;
if (fifo->max_recovery_attempts) {
av_log(avf, AV_LOG_VERBOSE, "Recovery attempt #%d/%d\n",
ctx->recovery_nr, fifo->max_recovery_attempts);
} else {
av_log(avf, AV_LOG_VERBOSE, "Recovery attempt #%d\n",
ctx->recovery_nr);
}
if (fifo->restart_with_keyframe && fifo->drop_pkts_on_overflow)
ctx->drop_until_keyframe = 1;
ret = fifo_thread_dispatch_message(ctx, msg);
if (ret < 0) {
if (is_recoverable(fifo, ret)) {
return fifo_thread_process_recovery_failure(ctx, pkt, ret);
} else {
goto fail;
}
} else {
av_log(avf, AV_LOG_INFO, "Recovery successful\n");
ctx->recovery_nr = 0;
}
return 0;
fail:
free_message(msg);
return ret;
}
static int fifo_thread_recover(FifoThreadContext *ctx, FifoMessage *msg, int err_no)
{
AVFormatContext *avf = ctx->avf;
FifoContext *fifo = avf->priv_data;
int ret;
do {
if (!fifo->recovery_wait_streamtime && ctx->recovery_nr > 0) {
int64_t time_since_recovery = av_gettime_relative() - ctx->last_recovery_ts;
int64_t time_to_wait = FFMAX(0, fifo->recovery_wait_time - time_since_recovery);
if (time_to_wait)
av_usleep(FFMIN(10000, time_to_wait));
}
ret = fifo_thread_attempt_recovery(ctx, msg, err_no);
} while (ret == AVERROR(EAGAIN) && !fifo->drop_pkts_on_overflow);
if (ret == AVERROR(EAGAIN) && fifo->drop_pkts_on_overflow) {
if (msg->type == FIFO_WRITE_PACKET)
av_packet_unref(&msg->pkt);
ret = 0;
}
return ret;
}
static void *fifo_consumer_thread(void *data)
{
AVFormatContext *avf = data;
FifoContext *fifo = avf->priv_data;
AVThreadMessageQueue *queue = fifo->queue;
FifoMessage msg = {FIFO_WRITE_HEADER, {0}};
int ret;
FifoThreadContext fifo_thread_ctx;
memset(&fifo_thread_ctx, 0, sizeof(FifoThreadContext));
fifo_thread_ctx.avf = avf;
while (1) {
uint8_t just_flushed = 0;
if (!fifo_thread_ctx.recovery_nr)
ret = fifo_thread_dispatch_message(&fifo_thread_ctx, &msg);
if (ret < 0 || fifo_thread_ctx.recovery_nr > 0) {
int rec_ret = fifo_thread_recover(&fifo_thread_ctx, &msg, ret);
if (rec_ret < 0) {
av_thread_message_queue_set_err_send(queue, rec_ret);
break;
}
}
/* If the queue is full at the moment when fifo_write_packet
* attempts to insert new message (packet) to the queue,
* it sets the fifo->overflow_flag to 1 and drops packet.
* Here in consumer thread, the flag is checked and if it is
* set, the queue is flushed and flag cleared. */
pthread_mutex_lock(&fifo->overflow_flag_lock);
if (fifo->overflow_flag) {
av_thread_message_flush(queue);
if (fifo->restart_with_keyframe)
fifo_thread_ctx.drop_until_keyframe = 1;
fifo->overflow_flag = 0;
just_flushed = 1;
}
pthread_mutex_unlock(&fifo->overflow_flag_lock);
if (just_flushed)
av_log(avf, AV_LOG_INFO, "FIFO queue flushed\n");
ret = av_thread_message_queue_recv(queue, &msg, 0);
if (ret < 0) {
av_thread_message_queue_set_err_send(queue, ret);
break;
}
}
fifo->write_trailer_ret = fifo_thread_write_trailer(&fifo_thread_ctx);
return NULL;
}
static int fifo_mux_init(AVFormatContext *avf, AVOutputFormat *oformat)
{
FifoContext *fifo = avf->priv_data;
AVFormatContext *avf2;
int ret = 0, i;
ret = avformat_alloc_output_context2(&avf2, oformat, NULL, NULL);
if (ret < 0)
return ret;
fifo->avf = avf2;
avf2->interrupt_callback = avf->interrupt_callback;
avf2->max_delay = avf->max_delay;
ret = av_dict_copy(&avf2->metadata, avf->metadata, 0);
if (ret < 0)
return ret;
avf2->opaque = avf->opaque;
avf2->io_close = avf->io_close;
avf2->io_open = avf->io_open;
avf2->flags = avf->flags;
for (i = 0; i < avf->nb_streams; ++i) {
AVStream *st = avformat_new_stream(avf2, NULL);
if (!st)
return AVERROR(ENOMEM);
ret = ff_stream_encode_params_copy(st, avf->streams[i]);
if (ret < 0)
return ret;
}
return 0;
}
static int fifo_init(AVFormatContext *avf)
{
FifoContext *fifo = avf->priv_data;
AVOutputFormat *oformat;
int ret = 0;
if (fifo->recovery_wait_streamtime && !fifo->drop_pkts_on_overflow) {
av_log(avf, AV_LOG_ERROR, "recovery_wait_streamtime can be turned on"
" only when drop_pkts_on_overflow is also turned on\n");
return AVERROR(EINVAL);
}
if (fifo->format_options_str) {
ret = av_dict_parse_string(&fifo->format_options, fifo->format_options_str,
"=", ":", 0);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
fifo->format_options_str);
return ret;
}
}
oformat = av_guess_format(fifo->format, avf->filename, NULL);
if (!oformat) {
ret = AVERROR_MUXER_NOT_FOUND;
return ret;
}
ret = fifo_mux_init(avf, oformat);
if (ret < 0)
return ret;
ret = av_thread_message_queue_alloc(&fifo->queue, (unsigned) fifo->queue_size,
sizeof(FifoMessage));
if (ret < 0)
return ret;
av_thread_message_queue_set_free_func(fifo->queue, free_message);
ret = pthread_mutex_init(&fifo->overflow_flag_lock, NULL);
if (ret < 0)
return AVERROR(ret);
return 0;
}
static int fifo_write_header(AVFormatContext *avf)
{
FifoContext * fifo = avf->priv_data;
int ret;
ret = pthread_create(&fifo->writer_thread, NULL, fifo_consumer_thread, avf);
if (ret) {
av_log(avf, AV_LOG_ERROR, "Failed to start thread: %s\n",
av_err2str(AVERROR(ret)));
ret = AVERROR(ret);
}
return ret;
}
static int fifo_write_packet(AVFormatContext *avf, AVPacket *pkt)
{
FifoContext *fifo = avf->priv_data;
FifoMessage msg = {.type = pkt ? FIFO_WRITE_PACKET : FIFO_FLUSH_OUTPUT};
int ret;
if (pkt) {
av_init_packet(&msg.pkt);
ret = av_packet_ref(&msg.pkt,pkt);
if (ret < 0)
return ret;
}
ret = av_thread_message_queue_send(fifo->queue, &msg,
fifo->drop_pkts_on_overflow ?
AV_THREAD_MESSAGE_NONBLOCK : 0);
if (ret == AVERROR(EAGAIN)) {
uint8_t overflow_set = 0;
/* Queue is full, set fifo->overflow_flag to 1
* to let consumer thread know the queue should
* be flushed. */
pthread_mutex_lock(&fifo->overflow_flag_lock);
if (!fifo->overflow_flag)
fifo->overflow_flag = overflow_set = 1;
pthread_mutex_unlock(&fifo->overflow_flag_lock);
if (overflow_set)
av_log(avf, AV_LOG_WARNING, "FIFO queue full\n");
ret = 0;
goto fail;
} else if (ret < 0) {
goto fail;
}
return ret;
fail:
if (pkt)
av_packet_unref(&msg.pkt);
return ret;
}
static int fifo_write_trailer(AVFormatContext *avf)
{
FifoContext *fifo= avf->priv_data;
int ret;
av_thread_message_queue_set_err_recv(fifo->queue, AVERROR_EOF);
ret = pthread_join(fifo->writer_thread, NULL);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR, "pthread join error: %s\n",
av_err2str(AVERROR(ret)));
return AVERROR(ret);
}
ret = fifo->write_trailer_ret;
return ret;
}
static void fifo_deinit(AVFormatContext *avf)
{
FifoContext *fifo = avf->priv_data;
av_dict_free(&fifo->format_options);
avformat_free_context(fifo->avf);
av_thread_message_queue_free(&fifo->queue);
pthread_mutex_destroy(&fifo->overflow_flag_lock);
}
#define OFFSET(x) offsetof(FifoContext, x)
static const AVOption options[] = {
{"fifo_format", "Target muxer", OFFSET(format),
AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM},
{"queue_size", "Size of fifo queue", OFFSET(queue_size),
AV_OPT_TYPE_INT, {.i64 = FIFO_DEFAULT_QUEUE_SIZE}, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{"format_opts", "Options to be passed to underlying muxer", OFFSET(format_options_str),
AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM},
{"drop_pkts_on_overflow", "Drop packets on fifo queue overflow not to block encoder", OFFSET(drop_pkts_on_overflow),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{"restart_with_keyframe", "Wait for keyframe when restarting output", OFFSET(restart_with_keyframe),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{"attempt_recovery", "Attempt recovery in case of failure", OFFSET(attempt_recovery),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{"max_recovery_attempts", "Maximal number of recovery attempts", OFFSET(max_recovery_attempts),
AV_OPT_TYPE_INT, {.i64 = FIFO_DEFAULT_MAX_RECOVERY_ATTEMPTS}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{"recovery_wait_time", "Waiting time between recovery attempts", OFFSET(recovery_wait_time),
AV_OPT_TYPE_DURATION, {.i64 = FIFO_DEFAULT_RECOVERY_WAIT_TIME_USEC}, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{"recovery_wait_streamtime", "Use stream time instead of real time while waiting for recovery",
OFFSET(recovery_wait_streamtime), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{"recover_any_error", "Attempt recovery regardless of type of the error", OFFSET(recover_any_error),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{NULL},
};
static const AVClass fifo_muxer_class = {
.class_name = "Fifo muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_fifo_muxer = {
.name = "fifo",
.long_name = NULL_IF_CONFIG_SMALL("FIFO queue pseudo-muxer"),
.priv_data_size = sizeof(FifoContext),
.init = fifo_init,
.write_header = fifo_write_header,
.write_packet = fifo_write_packet,
.write_trailer = fifo_write_trailer,
.deinit = fifo_deinit,
.priv_class = &fifo_muxer_class,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
};

4
libavformat/version.h
View File

@ -32,8 +32,8 @@
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 57
#define LIBAVFORMAT_VERSION_MINOR 47
#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_MINOR 48
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \