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-rw-r--r--libavformat/fifo.c666
1 files changed, 666 insertions, 0 deletions
diff --git a/libavformat/fifo.c b/libavformat/fifo.c
new file mode 100644
index 0000000000..2cbe5c56af
--- /dev/null
+++ b/libavformat/fifo.c
@@ -0,0 +1,666 @@
+/*
+ * 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/avassert.h"
+#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;
+ int overflow_flag_lock_initialized;
+ /* 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 = AVERROR(EINVAL);
+
+ if (!ctx->header_written) {
+ ret = fifo_thread_write_header(ctx);
+ if (ret < 0)
+ return ret;
+ }
+
+ switch(msg->type) {
+ case FIFO_WRITE_HEADER:
+ av_assert0(ret >= 0);
+ return ret;
+ case FIFO_WRITE_PACKET:
+ return fifo_thread_write_packet(ctx, &msg->pkt);
+ case FIFO_FLUSH_OUTPUT:
+ return fifo_thread_flush_output(ctx);
+ }
+
+ av_assert0(0);
+ 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);
+ fifo->overflow_flag_lock_initialized = 1;
+
+ 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);
+ if (fifo->overflow_flag_lock_initialized)
+ 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,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 13:31:55 +0000