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Update dash context target_latency #56

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merged 1 commit into from
Jan 20, 2025
+18 −14
Merged

Update dash context target_latency #56

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32 changes: 18 additions & 14 deletions libavformat/dashenc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,20 @@ static const struct codec_string {
{ AV_CODEC_ID_NONE }
};

static atomic_int deviations_happened = 0;
static atomic_int deviations_allowed = 0;
static atomic_int_fast64_t target_latency = 0;

void av_set_target_latency(int64_t latency, int deviations_allowed) {
target_latency = latency;
deviations_allowed = deviations_allowed;
}

static atomic_int availability_time_offset = -1;
void av_set_availability_time_offset(int64_t offset) {
availability_time_offset = offset;
}

/* Still being used by deleting of old files */
static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
AVDictionary **options) {
Expand Down Expand Up @@ -1314,6 +1328,10 @@ static int write_manifest(AVFormatContext *s, int final)

avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
if (!final && c->target_latency && c->target_latency_refid >= 0) {
if (c->target_latency != target_latency) {
c->target_latency = target_latency;
}

avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
if (s->nb_streams > 1)
avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
Expand Down Expand Up @@ -2080,20 +2098,6 @@ static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStrea
memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
}

static atomic_int deviations_happened = 0;
static atomic_int deviations_allowed = 0;
static atomic_int_fast64_t target_latency = 0;

void av_set_target_latency(int64_t latency, int deviations_allowed) {
target_latency = latency;
deviations_allowed = deviations_allowed;
}

static atomic_int availability_time_offset = -1;
void av_set_availability_time_offset(int64_t offset) {
availability_time_offset = offset;
}

static int dash_flush(AVFormatContext *s, int final, int stream)
{
DASHContext *c = s->priv_data;
Expand Down