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Refactor encoder_state_remove_refs

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I needed to debug this, so I rewrote it to make sense. There is an
obvious bug with the IDR handling that I left in place to fix in a
separate commit.
This commit is contained in:
Ari Koivula 2016-05-27 12:54:31 +03:00
parent b5c05e58e0
commit a77dc1610e
1 changed files with 54 additions and 33 deletions
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85
src/encoderstate.c
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@ -715,44 +715,65 @@ static void encoder_state_ref_sort(encoder_state_t *state) {
}
}
/**
* \brief Remove any references that should no longer be used.
*/
static void encoder_state_remove_refs(encoder_state_t *state) {
const encoder_control_t * const encoder = state->encoder_control;
int8_t refnumber = encoder->cfg->ref_frames;
int8_t check_refs = 0;
int neg_refs = encoder->cfg->gop[state->global->gop_offset].ref_neg_count;
int pos_refs = encoder->cfg->gop[state->global->gop_offset].ref_pos_count;
unsigned target_ref_num;
if (encoder->cfg->gop_len) {
refnumber = encoder->cfg->gop[state->global->gop_offset].ref_neg_count + encoder->cfg->gop[state->global->gop_offset].ref_pos_count;
check_refs = 1;
} else if (state->global->slicetype == KVZ_SLICE_I) {
refnumber = 0;
target_ref_num = neg_refs + pos_refs;
} else {
target_ref_num = encoder->cfg->ref_frames;
if (state->global->slicetype == KVZ_SLICE_I) {
target_ref_num = 0; // TODO: do the same with GOP
}
// Remove the ref pic (if present)
while (check_refs || state->global->ref->used_size > (uint32_t)refnumber) {
int8_t ref_to_remove = state->global->ref->used_size - 1;
if (encoder->cfg->gop_len) {
for (int ref = 0; ref < state->global->ref->used_size; ref++) {
uint8_t found = 0;
for (int i = 0; i < encoder->cfg->gop[state->global->gop_offset].ref_neg_count; i++) {
if (state->global->ref->pocs[ref] == state->global->poc - encoder->cfg->gop[state->global->gop_offset].ref_neg[i]) {
found = 1;
break;
}
}
if (found) continue;
for (int i = 0; i < encoder->cfg->gop[state->global->gop_offset].ref_pos_count; i++) {
if (state->global->ref->pocs[ref] == state->global->poc + encoder->cfg->gop[state->global->gop_offset].ref_pos[i]) {
found = 1;
break;
}
}
if (!found) {
kvz_image_list_rem(state->global->ref, ref);
ref--;
}
}
check_refs = 0;
} else kvz_image_list_rem(state->global->ref, ref_to_remove);
}
if (encoder->cfg->gop_len) {
// With GOP in use, go through all the existing reference pictures and
// remove any picture that is not referenced by the current picture.
for (int ref = state->global->ref->used_size - 1; ref >= 0; --ref) {
bool is_referenced = false;
int ref_poc = state->global->ref->pocs[ref];
for (int i = 0; i < neg_refs; i++) {
int ref_relative_poc = -encoder->cfg->gop[state->global->gop_offset].ref_neg[i];
if (ref_poc == state->global->poc + ref_relative_poc) {
is_referenced = true;
break;
}
}
for (int i = 0; i < pos_refs; i++) {
int ref_relative_poc = encoder->cfg->gop[state->global->gop_offset].ref_pos[i];
if (ref_poc == state->global->poc + ref_relative_poc) {
is_referenced = true;
break;
}
}
if (!is_referenced) {
// This reference is not referred to by this frame, it must be removed.
kvz_image_list_rem(state->global->ref, ref);
}
}
} else {
// Without GOP, remove the oldest picture.
while (state->global->ref->used_size > target_ref_num) {
int8_t oldest_ref = state->global->ref->used_size - 1;
kvz_image_list_rem(state->global->ref, oldest_ref);
}
}
assert(state->global->ref->used_size <= target_ref_num);
}
static void encoder_state_reset_poc(encoder_state_t *state) {