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Not nice dropping of frames (with bad jitter)

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This commit is contained in:
Kamil Trzcinski
2022-04-07 13:12:41 +02:00
parent e86bedd95a
commit c86112ae77
3 changed files with 35 additions and 12 deletions
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41
hw/buffer_lock.c
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@ -1,4 +1,5 @@
#include "hw/buffer_lock.h"
#include "hw/buffer_list.h"
bool buffer_lock_is_used(buffer_lock_t *buf_lock)
{
@ -38,19 +39,35 @@ bool buffer_lock_needs_buffer(buffer_lock_t *buf_lock)
void buffer_lock_capture(buffer_lock_t *buf_lock, buffer_t *buf)
{
uint64_t now = get_monotonic_time_us(NULL, NULL);
uint64_t captured_time_us = buf ? get_time_us(CLOCK_FROM_PARAMS, NULL, &buf->v4l2_buffer.timestamp, 0) : 0;
pthread_mutex_lock(&buf_lock->lock);
buffer_consumed(buf_lock->buf, buf_lock->name);
buffer_use(buf);
buf_lock->buf = buf;
buf_lock->counter++;
uint64_t last_lock_us = buf_lock->buf_time_us;
uint64_t captured_time_us = get_time_us(CLOCK_FROM_PARAMS, NULL, &buf->v4l2_buffer.timestamp, 0);
buf_lock->buf_time_us = get_monotonic_time_us(NULL, NULL);
E_LOG_DEBUG(buf_lock, "Captured buffer %s (refs=%d), frame=%d, processing_us=%.1f, frame_us=%.1f",
dev_name(buf), buf ? buf->mmap_reflinks : 0, buf_lock->counter,
(buf_lock->buf_time_us - captured_time_us) / 1000.0f,
(buf_lock->buf_time_us - last_lock_us) / 1000.0f);
pthread_cond_broadcast(&buf_lock->cond_wait);
if (!buf) {
buffer_consumed(buf_lock->buf, buf_lock->name);
buf_lock->buf = NULL;
buf_lock->buf_time_us = now;
} else if (now - buf_lock->buf_time_us < buf->buf_list->fmt_interval_us) {
buf_lock->dropped++;
E_LOG_DEBUG(buf_lock, "Dropped buffer %s (refs=%d), frame=%d/%d, frame_us=%.1f",
dev_name(buf), buf ? buf->mmap_reflinks : 0,
buf_lock->counter, buf_lock->dropped,
(now - captured_time_us) / 1000.0f);
} else {
buffer_consumed(buf_lock->buf, buf_lock->name);
buffer_use(buf);
buf_lock->buf = buf;
buf_lock->counter++;
E_LOG_DEBUG(buf_lock, "Captured buffer %s (refs=%d), frame=%d/%d, processing_us=%.1f, frame_us=%.1f",
dev_name(buf), buf ? buf->mmap_reflinks : 0,
buf_lock->counter, buf_lock->dropped,
(now - captured_time_us) / 1000.0f,
(now - buf_lock->buf_time_us) / 1000.0f);
buf_lock->buf_time_us = now;
pthread_cond_broadcast(&buf_lock->cond_wait);
}
pthread_mutex_unlock(&buf_lock->lock);
}