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fftools/ffmpeg: add thread-aware transcode scheduling infrastructure

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See the comment block at the top of fftools/ffmpeg_sched.h for more
details on what this scheduler is for.

This commit adds the scheduling code itself, along with minimal
integration with the rest of the program:
* allocating and freeing the scheduler
* passing it throughout the call stack in order to register the
  individual components (demuxers/decoders/filtergraphs/encoders/muxers)
  with the scheduler

The scheduler is not actually used as of this commit, so it should not
result in any change in behavior. That will change in future commits.
This commit is contained in:
Anton Khirnov
2023-05-18 16:56:15 +02:00
parent ee2a8cbfd1
commit 9b8cc36ce0
13 changed files with 2936 additions and 56 deletions
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13
fftools/ffmpeg_enc.c
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@@ -56,6 +56,9 @@ struct Encoder {
int opened;
int finished;
Scheduler *sch;
unsigned sch_idx;
pthread_t thread;
/**
* Queue for sending frames from the main thread to
@@ -113,7 +116,8 @@ void enc_free(Encoder **penc)
av_freep(penc);
}
int enc_alloc(Encoder **penc, const AVCodec *codec)
int enc_alloc(Encoder **penc, const AVCodec *codec,
Scheduler *sch, unsigned sch_idx)
{
Encoder *enc;
@@ -133,6 +137,9 @@ int enc_alloc(Encoder **penc, const AVCodec *codec)
if (!enc->pkt)
goto fail;
enc->sch = sch;
enc->sch_idx = sch_idx;
*penc = enc;
return 0;
@@ -217,8 +224,6 @@ static int set_encoder_id(OutputFile *of, OutputStream *ost)
return 0;
}
static void *encoder_thread(void *arg);
static int enc_thread_start(OutputStream *ost)
{
Encoder *e = ost->enc;
@@ -1001,7 +1006,7 @@ fail:
return AVERROR(ENOMEM);
}
static void *encoder_thread(void *arg)
void *encoder_thread(void *arg)
{
OutputStream *ost = arg;
OutputFile *of = output_files[ost->file_index];