@@ -791,16 +791,6 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo
dts_est = pd->dts_est;
}
- if (f->recording_time != INT64_MAX) {
- int64_t start_time = 0;
- if (copy_ts) {
- start_time += f->start_time != AV_NOPTS_VALUE ? f->start_time : 0;
- start_time += start_at_zero ? 0 : f->start_time_effective;
- }
- if (dts_est >= f->recording_time + start_time)
- pkt = NULL;
- }
-
for (int oidx = 0; oidx < ist->nb_outputs; oidx++) {
OutputStream *ost = ist->outputs[oidx];
if (ost->enc || (!pkt && no_eof))
@@ -1029,7 +1019,7 @@ static int process_input(int file_index, AVPacket *pkt)
InputStream *ist;
int ret, i;
- ret = ifile_get_packet(ifile, pkt);
+ ret = 0;
if (ret == 1) {
/* the input file is looped: flush the decoders */
@@ -89,6 +89,10 @@ enum FrameOpaque {
FRAME_OPAQUE_SEND_COMMAND,
};
+enum PacketOpaque {
+ PKT_OPAQUE_SUB_HEARTBEAT = 1,
+};
+
typedef struct HWDevice {
const char *name;
enum AVHWDeviceType type;
@@ -424,11 +428,6 @@ typedef struct InputFile {
float readrate;
int accurate_seek;
-
- /* when looping the input file, this queue is used by decoders to report
- * the last frame timestamp back to the demuxer thread */
- AVThreadMessageQueue *audio_ts_queue;
- int audio_ts_queue_size;
} InputFile;
enum forced_keyframes_const {
@@ -842,18 +841,6 @@ int64_t of_filesize(OutputFile *of);
int ifile_open(const OptionsContext *o, const char *filename, Scheduler *sch);
void ifile_close(InputFile **f);
-/**
- * Get next input packet from the demuxer.
- *
- * @param pkt the packet is written here when this function returns 0
- * @return
- * - 0 when a packet has been read successfully
- * - 1 when stream end was reached, but the stream is looped;
- * caller should flush decoders and read from this demuxer again
- * - a negative error code on failure
- */
-int ifile_get_packet(InputFile *f, AVPacket *pkt);
-
int ist_output_add(InputStream *ist, OutputStream *ost);
int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple);
@@ -22,8 +22,6 @@
#include "ffmpeg.h"
#include "ffmpeg_sched.h"
#include "ffmpeg_utils.h"
-#include "objpool.h"
-#include "thread_queue.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
@@ -35,7 +33,6 @@
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavutil/timestamp.h"
-#include "libavutil/thread.h"
#include "libavcodec/packet.h"
@@ -66,7 +63,11 @@ typedef struct DemuxStream {
double ts_scale;
+ // scheduler returned EOF for this stream
+ int finished;
+
int streamcopy_needed;
+ int have_sub2video;
int wrap_correction_done;
int saw_first_ts;
@@ -101,6 +102,7 @@ typedef struct Demuxer {
/* number of times input stream should be looped */
int loop;
+ int have_audio_dec;
/* duration of the looped segment of the input file */
Timestamp duration;
/* pts with the smallest/largest values ever seen */
@@ -113,11 +115,12 @@ typedef struct Demuxer {
double readrate_initial_burst;
Scheduler *sch;
- ThreadQueue *thread_queue;
- int thread_queue_size;
- pthread_t thread;
+
+ AVPacket *pkt_heartbeat;
int read_started;
+ int nb_streams_used;
+ int nb_streams_finished;
} Demuxer;
static DemuxStream *ds_from_ist(InputStream *ist)
@@ -153,7 +156,7 @@ static void report_new_stream(Demuxer *d, const AVPacket *pkt)
d->nb_streams_warn = pkt->stream_index + 1;
}
-static int seek_to_start(Demuxer *d)
+static int seek_to_start(Demuxer *d, Timestamp end_pts)
{
InputFile *ifile = &d->f;
AVFormatContext *is = ifile->ctx;
@@ -163,21 +166,10 @@ static int seek_to_start(Demuxer *d)
if (ret < 0)
return ret;
- if (ifile->audio_ts_queue_size) {
- int got_ts = 0;
-
- while (got_ts < ifile->audio_ts_queue_size) {
- Timestamp ts;
- ret = av_thread_message_queue_recv(ifile->audio_ts_queue, &ts, 0);
- if (ret < 0)
- return ret;
- got_ts++;
-
- if (d->max_pts.ts == AV_NOPTS_VALUE ||
- av_compare_ts(d->max_pts.ts, d->max_pts.tb, ts.ts, ts.tb) < 0)
- d->max_pts = ts;
- }
- }
+ if (end_pts.ts != AV_NOPTS_VALUE &&
+ (d->max_pts.ts == AV_NOPTS_VALUE ||
+ av_compare_ts(d->max_pts.ts, d->max_pts.tb, end_pts.ts, end_pts.tb) < 0))
+ d->max_pts = end_pts;
if (d->max_pts.ts != AV_NOPTS_VALUE) {
int64_t min_pts = d->min_pts.ts == AV_NOPTS_VALUE ? 0 : d->min_pts.ts;
@@ -404,7 +396,7 @@ static int ts_fixup(Demuxer *d, AVPacket *pkt)
duration = av_rescale_q(d->duration.ts, d->duration.tb, pkt->time_base);
if (pkt->pts != AV_NOPTS_VALUE) {
// audio decoders take precedence for estimating total file duration
- int64_t pkt_duration = ifile->audio_ts_queue_size ? 0 : pkt->duration;
+ int64_t pkt_duration = d->have_audio_dec ? 0 : pkt->duration;
pkt->pts += duration;
@@ -440,7 +432,7 @@ static int ts_fixup(Demuxer *d, AVPacket *pkt)
return 0;
}
-static int input_packet_process(Demuxer *d, AVPacket *pkt)
+static int input_packet_process(Demuxer *d, AVPacket *pkt, unsigned *send_flags)
{
InputFile *f = &d->f;
InputStream *ist = f->streams[pkt->stream_index];
@@ -451,6 +443,16 @@ static int input_packet_process(Demuxer *d, AVPacket *pkt)
if (ret < 0)
return ret;
+ if (f->recording_time != INT64_MAX) {
+ int64_t start_time = 0;
+ if (copy_ts) {
+ start_time += f->start_time != AV_NOPTS_VALUE ? f->start_time : 0;
+ start_time += start_at_zero ? 0 : f->start_time_effective;
+ }
+ if (ds->dts >= f->recording_time + start_time)
+ *send_flags |= DEMUX_SEND_STREAMCOPY_EOF;
+ }
+
ds->data_size += pkt->size;
ds->nb_packets++;
@@ -465,6 +467,8 @@ static int input_packet_process(Demuxer *d, AVPacket *pkt)
av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
}
+ pkt->stream_index = ds->sch_idx_stream;
+
return 0;
}
@@ -488,6 +492,65 @@ static void readrate_sleep(Demuxer *d)
}
}
+static int do_send(Demuxer *d, DemuxStream *ds, AVPacket *pkt, unsigned flags,
+ const char *pkt_desc)
+{
+ int ret;
+
+ ret = sch_demux_send(d->sch, d->f.index, pkt, flags);
+ if (ret == AVERROR_EOF) {
+ av_packet_unref(pkt);
+
+ av_log(ds, AV_LOG_VERBOSE, "All consumers of this stream are done\n");
+ ds->finished = 1;
+
+ if (++d->nb_streams_finished == d->nb_streams_used) {
+ av_log(d, AV_LOG_VERBOSE, "All consumers are done\n");
+ return AVERROR_EOF;
+ }
+ } else if (ret < 0) {
+ if (ret != AVERROR_EXIT)
+ av_log(d, AV_LOG_ERROR,
+ "Unable to send %s packet to consumers: %s\n",
+ pkt_desc, av_err2str(ret));
+ return ret;
+ }
+
+ return 0;
+}
+
+static int demux_send(Demuxer *d, DemuxStream *ds, AVPacket *pkt, unsigned flags)
+{
+ InputFile *f = &d->f;
+ int ret;
+
+ // send heartbeat for sub2video streams
+ if (d->pkt_heartbeat && pkt->pts != AV_NOPTS_VALUE) {
+ for (int i = 0; i < f->nb_streams; i++) {
+ DemuxStream *ds1 = ds_from_ist(f->streams[i]);
+
+ if (ds1->finished || !ds1->have_sub2video)
+ continue;
+
+ d->pkt_heartbeat->pts = pkt->pts;
+ d->pkt_heartbeat->time_base = pkt->time_base;
+ d->pkt_heartbeat->stream_index = ds1->sch_idx_stream;
+ d->pkt_heartbeat->opaque = (void*)(intptr_t)PKT_OPAQUE_SUB_HEARTBEAT;
+
+ ret = do_send(d, ds1, d->pkt_heartbeat, 0, "heartbeat");
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ ret = do_send(d, ds, pkt, flags, "demuxed");
+ if (ret < 0)
+ return ret;
+
+
+ return 0;
+}
+
static void discard_unused_programs(InputFile *ifile)
{
for (int j = 0; j < ifile->ctx->nb_programs; j++) {
@@ -527,9 +590,13 @@ static void *input_thread(void *arg)
discard_unused_programs(f);
+ d->read_started = 1;
d->wallclock_start = av_gettime_relative();
while (1) {
+ DemuxStream *ds;
+ unsigned send_flags = 0;
+
ret = av_read_frame(f->ctx, pkt);
if (ret == AVERROR(EAGAIN)) {
@@ -538,11 +605,13 @@ static void *input_thread(void *arg)
}
if (ret < 0) {
if (d->loop) {
- /* signal looping to the consumer thread */
+ /* signal looping to our consumers */
pkt->stream_index = -1;
- ret = tq_send(d->thread_queue, 0, pkt);
+
+ ret = sch_demux_send(d->sch, f->index, pkt, 0);
if (ret >= 0)
- ret = seek_to_start(d);
+ ret = seek_to_start(d, (Timestamp){ .ts = pkt->pts,
+ .tb = pkt->time_base });
if (ret >= 0)
continue;
@@ -551,9 +620,11 @@ static void *input_thread(void *arg)
if (ret == AVERROR_EOF)
av_log(d, AV_LOG_VERBOSE, "EOF while reading input\n");
- else
+ else {
av_log(d, AV_LOG_ERROR, "Error during demuxing: %s\n",
av_err2str(ret));
+ ret = exit_on_error ? ret : 0;
+ }
break;
}
@@ -565,8 +636,9 @@ static void *input_thread(void *arg)
/* the following test is needed in case new streams appear
dynamically in stream : we ignore them */
- if (pkt->stream_index >= f->nb_streams ||
- f->streams[pkt->stream_index]->discard) {
+ ds = pkt->stream_index < f->nb_streams ?
+ ds_from_ist(f->streams[pkt->stream_index]) : NULL;
+ if (!ds || ds->ist.discard || ds->finished) {
report_new_stream(d, pkt);
av_packet_unref(pkt);
continue;
@@ -583,122 +655,26 @@ static void *input_thread(void *arg)
}
}
- ret = input_packet_process(d, pkt);
+ ret = input_packet_process(d, pkt, &send_flags);
if (ret < 0)
break;
if (f->readrate)
readrate_sleep(d);
- ret = tq_send(d->thread_queue, 0, pkt);
- if (ret < 0) {
- if (ret != AVERROR_EOF)
- av_log(f, AV_LOG_ERROR,
- "Unable to send packet to main thread: %s\n",
- av_err2str(ret));
+ ret = demux_send(d, ds, pkt, send_flags);
+ if (ret < 0)
break;
- }
}
+ // EOF/EXIT is normal termination
+ if (ret == AVERROR_EOF || ret == AVERROR_EXIT)
+ ret = 0;
+
finish:
- av_assert0(ret < 0);
- tq_send_finish(d->thread_queue, 0);
-
av_packet_free(&pkt);
- av_log(d, AV_LOG_VERBOSE, "Terminating demuxer thread\n");
-
- return NULL;
-}
-
-static void thread_stop(Demuxer *d)
-{
- InputFile *f = &d->f;
-
- if (!d->thread_queue)
- return;
-
- tq_receive_finish(d->thread_queue, 0);
-
- pthread_join(d->thread, NULL);
-
- tq_free(&d->thread_queue);
-
- av_thread_message_queue_free(&f->audio_ts_queue);
-}
-
-static int thread_start(Demuxer *d)
-{
- int ret;
- InputFile *f = &d->f;
- ObjPool *op;
-
- if (d->thread_queue_size <= 0)
- d->thread_queue_size = (nb_input_files > 1 ? 8 : 1);
-
- op = objpool_alloc_packets();
- if (!op)
- return AVERROR(ENOMEM);
-
- d->thread_queue = tq_alloc(1, d->thread_queue_size, op, pkt_move);
- if (!d->thread_queue) {
- objpool_free(&op);
- return AVERROR(ENOMEM);
- }
-
- if (d->loop) {
- int nb_audio_dec = 0;
-
- for (int i = 0; i < f->nb_streams; i++) {
- InputStream *ist = f->streams[i];
- nb_audio_dec += !!(ist->decoding_needed &&
- ist->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO);
- }
-
- if (nb_audio_dec) {
- ret = av_thread_message_queue_alloc(&f->audio_ts_queue,
- nb_audio_dec, sizeof(Timestamp));
- if (ret < 0)
- goto fail;
- f->audio_ts_queue_size = nb_audio_dec;
- }
- }
-
- if ((ret = pthread_create(&d->thread, NULL, input_thread, d))) {
- av_log(d, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
- ret = AVERROR(ret);
- goto fail;
- }
-
- d->read_started = 1;
-
- return 0;
-fail:
- tq_free(&d->thread_queue);
- return ret;
-}
-
-int ifile_get_packet(InputFile *f, AVPacket *pkt)
-{
- Demuxer *d = demuxer_from_ifile(f);
- int ret, dummy;
-
- if (!d->thread_queue) {
- ret = thread_start(d);
- if (ret < 0)
- return ret;
- }
-
- ret = tq_receive(d->thread_queue, &dummy, pkt);
- if (ret < 0)
- return ret;
-
- if (pkt->stream_index == -1) {
- av_assert0(!pkt->data && !pkt->side_data_elems);
- return 1;
- }
-
- return 0;
+ return (void*)(intptr_t)ret;
}
static void demux_final_stats(Demuxer *d)
@@ -769,8 +745,6 @@ void ifile_close(InputFile **pf)
if (!f)
return;
- thread_stop(d);
-
if (d->read_started)
demux_final_stats(d);
@@ -780,6 +754,8 @@ void ifile_close(InputFile **pf)
avformat_close_input(&f->ctx);
+ av_packet_free(&d->pkt_heartbeat);
+
av_freep(pf);
}
@@ -802,7 +778,11 @@ static int ist_use(InputStream *ist, int decoding_needed)
ds->sch_idx_stream = ret;
}
- ist->discard = 0;
+ if (ist->discard) {
+ ist->discard = 0;
+ d->nb_streams_used++;
+ }
+
ist->st->discard = ist->user_set_discard;
ist->decoding_needed |= decoding_needed;
ds->streamcopy_needed |= !decoding_needed;
@@ -823,6 +803,8 @@ static int ist_use(InputStream *ist, int decoding_needed)
ret = dec_open(ist, d->sch, ds->sch_idx_dec);
if (ret < 0)
return ret;
+
+ d->have_audio_dec |= is_audio;
}
return 0;
@@ -848,6 +830,7 @@ int ist_output_add(InputStream *ist, OutputStream *ost)
int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple)
{
+ Demuxer *d = demuxer_from_ifile(input_files[ist->file_index]);
DemuxStream *ds = ds_from_ist(ist);
int ret;
@@ -866,6 +849,15 @@ int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple)
if (ret < 0)
return ret;
+ if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
+ if (!d->pkt_heartbeat) {
+ d->pkt_heartbeat = av_packet_alloc();
+ if (!d->pkt_heartbeat)
+ return AVERROR(ENOMEM);
+ }
+ ds->have_sub2video = 1;
+ }
+
return ds->sch_idx_dec;
}
@@ -1607,8 +1599,6 @@ int ifile_open(const OptionsContext *o, const char *filename, Scheduler *sch)
"since neither -readrate nor -re were given\n");
}
- d->thread_queue_size = o->thread_queue_size;
-
/* Add all the streams from the given input file to the demuxer */
for (int i = 0; i < ic->nb_streams; i++) {
ret = ist_add(o, d, ic->streams[i]);