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fix jitterbuffer

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This commit is contained in:
Anthony Minessale 2010-11-17 10:51:14 -06:00
parent 5d28a8fa05
commit b517ddd6d3
1 changed files with 11 additions and 12 deletions
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23
libs/stfu/stfu.c
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@ -47,6 +47,7 @@ struct stfu_instance {
struct stfu_queue *in_queue; struct stfu_queue *in_queue;
struct stfu_queue *out_queue; struct stfu_queue *out_queue;
struct stfu_frame *last_frame; struct stfu_frame *last_frame;
uint32_t cur_ts;
uint32_t last_wr_ts; uint32_t last_wr_ts;
uint32_t last_rd_ts; uint32_t last_rd_ts;
uint32_t interval; uint32_t interval;
@ -267,27 +268,26 @@ static int stfu_n_find_frame(stfu_queue_t *queue, uint32_t ts, stfu_frame_t **r_
stfu_frame_t *stfu_n_read_a_frame(stfu_instance_t *i) stfu_frame_t *stfu_n_read_a_frame(stfu_instance_t *i)
{ {
uint32_t index; uint32_t index;
uint32_t should_have = 0;
stfu_frame_t *rframe = NULL; stfu_frame_t *rframe = NULL;
if (((i->out_queue->wr_len == i->out_queue->array_len) || !i->out_queue->array_len)) { if (((i->out_queue->wr_len == i->out_queue->array_len) || !i->out_queue->array_len)) {
return NULL; return NULL;
} }
if (i->last_wr_ts) { if (i->cur_ts == 0) {
should_have = i->last_wr_ts + i->interval; i->cur_ts = i->out_queue->array[1].ts;
} else { } else {
should_have = i->out_queue->array[0].ts; i->cur_ts += i->interval;
} }
if (stfu_n_find_frame(i->out_queue, should_have, &rframe, &index) || stfu_n_find_frame(i->in_queue, should_have, &rframe, &index)) { if (stfu_n_find_frame(i->out_queue, i->cur_ts, &rframe, &index) || stfu_n_find_frame(i->in_queue, i->cur_ts, &rframe, &index)) {
i->last_frame = rframe; i->last_frame = rframe;
i->out_queue->wr_len++; i->out_queue->wr_len++;
i->last_wr_ts = rframe->ts; i->last_wr_ts = rframe->ts;
rframe->was_read = 1; rframe->was_read = 1;
i->miss_count = 0; i->miss_count = 0;
} else { } else {
i->last_wr_ts = should_have; i->last_wr_ts = i->cur_ts;
rframe = &i->out_queue->int_frame; rframe = &i->out_queue->int_frame;
if (i->last_frame && i->last_frame != rframe) { if (i->last_frame && i->last_frame != rframe) {
@ -296,12 +296,11 @@ stfu_frame_t *stfu_n_read_a_frame(stfu_instance_t *i)
memcpy(rframe->data, i->last_frame->data, rframe->dlen); memcpy(rframe->data, i->last_frame->data, rframe->dlen);
} }
rframe->ts = should_have; rframe->ts = i->cur_ts;
if (++i->miss_count > i->max_plc) { if (++i->miss_count > i->max_plc) {
i->interval = 0;
i->out_queue->wr_len = i->out_queue->array_size; i->out_queue->wr_len = i->out_queue->array_size;
i->last_wr_ts = 0; i->cur_ts = 0;
rframe = NULL; rframe = NULL;
} }
} }