mirror of https://git.ffmpeg.org/ffmpeg.git
Rewrite fill_default_ref_list(), the old code was obfuscated beyond
repair with hacks. new code is ~60lines old was ~200 Fixes at least: FRExt/HCHP2_HHI_A.264 one sample also get decoded much better: FRExt/FRExt1_Panasonic.avc (PSNR 11 -> 80) (no i do not know why, the old code was too a big mess to figure out what it did) Originally committed as revision 14398 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
e3576e2513
commit
d4f7d83866
|
@ -2770,87 +2770,57 @@ static int split_field_copy(Picture *dest, Picture *src,
|
|||
|
||||
if (match) {
|
||||
*dest = *src;
|
||||
if(parity != PICT_FRAME){
|
||||
pic_as_field(dest, parity);
|
||||
dest->pic_id *= 2;
|
||||
dest->pic_id += id_add;
|
||||
}
|
||||
}
|
||||
|
||||
return match;
|
||||
}
|
||||
|
||||
/**
|
||||
* Split one reference list into field parts, interleaving by parity
|
||||
* as per H.264 spec section 8.2.4.2.5. Output fields have their data pointers
|
||||
* set to look at the actual start of data for that field.
|
||||
*
|
||||
* @param dest output list
|
||||
* @param dest_len maximum number of fields to put in dest
|
||||
* @param src the source reference list containing fields and/or field pairs
|
||||
* (aka short_ref/long_ref, or
|
||||
* refFrameListXShortTerm/refFrameListLongTerm in spec-speak)
|
||||
* @param src_len number of Picture's in source (pairs and unmatched fields)
|
||||
* @param parity the parity of the picture being decoded/needing
|
||||
* these ref pics (PICT_{TOP,BOTTOM}_FIELD)
|
||||
* @return number of fields placed in dest
|
||||
*/
|
||||
static int split_field_half_ref_list(Picture *dest, int dest_len,
|
||||
Picture *src, int src_len, int parity){
|
||||
int same_parity = 1;
|
||||
int same_i = 0;
|
||||
int opp_i = 0;
|
||||
int out_i;
|
||||
int field_output;
|
||||
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
|
||||
int i[2]={0};
|
||||
int index=0;
|
||||
|
||||
for (out_i = 0; out_i < dest_len; out_i += field_output) {
|
||||
if (same_parity && same_i < src_len) {
|
||||
field_output = split_field_copy(dest + out_i, src + same_i,
|
||||
parity, 1);
|
||||
same_parity = !field_output;
|
||||
same_i++;
|
||||
|
||||
} else if (opp_i < src_len) {
|
||||
field_output = split_field_copy(dest + out_i, src + opp_i,
|
||||
PICT_FRAME - parity, 0);
|
||||
same_parity = field_output;
|
||||
opp_i++;
|
||||
|
||||
} else {
|
||||
break;
|
||||
while(i[0]<len || i[1]<len){
|
||||
while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
|
||||
i[0]++;
|
||||
while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
|
||||
i[1]++;
|
||||
if(i[0] < len){
|
||||
in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
|
||||
split_field_copy(&def[index++], in[ i[0]++ ], sel , 1);
|
||||
}
|
||||
if(i[1] < len){
|
||||
in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
|
||||
split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
|
||||
}
|
||||
}
|
||||
|
||||
return out_i;
|
||||
return index;
|
||||
}
|
||||
|
||||
/**
|
||||
* Split the reference frame list into a reference field list.
|
||||
* This implements H.264 spec 8.2.4.2.5 for a combined input list.
|
||||
* The input list contains both reference field pairs and
|
||||
* unmatched reference fields; it is ordered as spec describes
|
||||
* RefPicListX for frames in 8.2.4.2.1 and 8.2.4.2.3, except that
|
||||
* unmatched field pairs are also present. Conceptually this is equivalent
|
||||
* to concatenation of refFrameListXShortTerm with refFrameListLongTerm.
|
||||
*
|
||||
* @param dest output reference list where ordered fields are to be placed
|
||||
* @param dest_len max number of fields to place at dest
|
||||
* @param src source reference list, as described above
|
||||
* @param src_len number of pictures (pairs and unmatched fields) in src
|
||||
* @param parity parity of field being currently decoded
|
||||
* (one of PICT_{TOP,BOTTOM}_FIELD)
|
||||
* @param long_i index into src array that holds first long reference picture,
|
||||
* or src_len if no long refs present.
|
||||
*/
|
||||
static int split_field_ref_list(Picture *dest, int dest_len,
|
||||
Picture *src, int src_len,
|
||||
int parity, int long_i){
|
||||
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
|
||||
int i, best_poc;
|
||||
int out_i= 0;
|
||||
|
||||
int i = split_field_half_ref_list(dest, dest_len, src, long_i, parity);
|
||||
dest += i;
|
||||
dest_len -= i;
|
||||
for(;;){
|
||||
best_poc= dir ? INT_MIN : INT_MAX;
|
||||
|
||||
i += split_field_half_ref_list(dest, dest_len, src + long_i,
|
||||
src_len - long_i, parity);
|
||||
return i;
|
||||
for(i=0; i<len; i++){
|
||||
const int poc= src[i]->poc;
|
||||
if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
|
||||
best_poc= poc;
|
||||
sorted[out_i]= src[i];
|
||||
}
|
||||
}
|
||||
if(best_poc == (dir ? INT_MIN : INT_MAX))
|
||||
break;
|
||||
limit= sorted[out_i++]->poc - dir;
|
||||
}
|
||||
return out_i;
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -2858,140 +2828,42 @@ static int split_field_ref_list(Picture *dest, int dest_len,
|
|||
*/
|
||||
static int fill_default_ref_list(H264Context *h){
|
||||
MpegEncContext * const s = &h->s;
|
||||
int i;
|
||||
int smallest_poc_greater_than_current = -1;
|
||||
int structure_sel;
|
||||
Picture sorted_short_ref[32];
|
||||
Picture field_entry_list[2][32];
|
||||
Picture *frame_list[2];
|
||||
|
||||
if (FIELD_PICTURE) {
|
||||
structure_sel = PICT_FRAME;
|
||||
frame_list[0] = field_entry_list[0];
|
||||
frame_list[1] = field_entry_list[1];
|
||||
} else {
|
||||
structure_sel = 0;
|
||||
frame_list[0] = h->default_ref_list[0];
|
||||
frame_list[1] = h->default_ref_list[1];
|
||||
}
|
||||
int i, len;
|
||||
|
||||
if(h->slice_type_nos==FF_B_TYPE){
|
||||
int list;
|
||||
int len[2];
|
||||
int short_len[2];
|
||||
int out_i;
|
||||
int limit= INT_MIN;
|
||||
Picture *sorted[32];
|
||||
int cur_poc, list;
|
||||
int lens[2];
|
||||
|
||||
/* sort frame according to POC in B slice */
|
||||
for(out_i=0; out_i<h->short_ref_count; out_i++){
|
||||
int best_i=INT_MIN;
|
||||
int best_poc=INT_MAX;
|
||||
if(FIELD_PICTURE)
|
||||
cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
|
||||
else
|
||||
cur_poc= s->current_picture_ptr->poc;
|
||||
|
||||
for(i=0; i<h->short_ref_count; i++){
|
||||
const int poc= h->short_ref[i]->poc;
|
||||
if(poc > limit && poc < best_poc){
|
||||
best_poc= poc;
|
||||
best_i= i;
|
||||
}
|
||||
}
|
||||
for(list= 0; list<2; list++){
|
||||
len= add_sorted(sorted , h->short_ref, h->short_ref_count, cur_poc, 1^list);
|
||||
len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
|
||||
assert(len<=32);
|
||||
len= build_def_list(h->default_ref_list[list] , sorted , len, 0, s->picture_structure);
|
||||
len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
|
||||
assert(len<=32);
|
||||
|
||||
assert(best_i != INT_MIN);
|
||||
|
||||
limit= best_poc;
|
||||
sorted_short_ref[out_i]= *h->short_ref[best_i];
|
||||
tprintf(h->s.avctx, "sorted poc: %d->%d poc:%d fn:%d\n", best_i, out_i, sorted_short_ref[out_i].poc, sorted_short_ref[out_i].frame_num);
|
||||
if (-1 == smallest_poc_greater_than_current) {
|
||||
if (h->short_ref[best_i]->poc >= s->current_picture_ptr->poc) {
|
||||
smallest_poc_greater_than_current = out_i;
|
||||
}
|
||||
}
|
||||
if(len < h->ref_count[list])
|
||||
memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
|
||||
lens[list]= len;
|
||||
}
|
||||
|
||||
tprintf(h->s.avctx, "current poc: %d, smallest_poc_greater_than_current: %d\n", s->current_picture_ptr->poc, smallest_poc_greater_than_current);
|
||||
|
||||
// find the largest POC
|
||||
for(list=0; list<2; list++){
|
||||
int index = 0;
|
||||
int j= -99;
|
||||
int step= list ? -1 : 1;
|
||||
|
||||
for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++, j+=step) {
|
||||
int sel;
|
||||
while(j<0 || j>= h->short_ref_count){
|
||||
if(j != -99 && step == (list ? -1 : 1))
|
||||
return -1;
|
||||
step = -step;
|
||||
j= smallest_poc_greater_than_current + (step>>1);
|
||||
}
|
||||
sel = sorted_short_ref[j].reference | structure_sel;
|
||||
if(sel != PICT_FRAME) continue;
|
||||
frame_list[list][index ]= sorted_short_ref[j];
|
||||
frame_list[list][index++].pic_id= sorted_short_ref[j].frame_num;
|
||||
}
|
||||
short_len[list] = index;
|
||||
|
||||
for(i = 0; i < 16 && index < h->ref_count[ list ]; i++){
|
||||
int sel;
|
||||
if(h->long_ref[i] == NULL) continue;
|
||||
sel = h->long_ref[i]->reference | structure_sel;
|
||||
if(sel != PICT_FRAME) continue;
|
||||
|
||||
frame_list[ list ][index ]= *h->long_ref[i];
|
||||
frame_list[ list ][index++].pic_id= i;
|
||||
}
|
||||
len[list] = index;
|
||||
if(lens[0] == lens[1] && lens[1] > 1){
|
||||
for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
|
||||
if(i == lens[0])
|
||||
FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
|
||||
}
|
||||
|
||||
for(list=0; list<2; list++){
|
||||
if (FIELD_PICTURE)
|
||||
len[list] = split_field_ref_list(h->default_ref_list[list],
|
||||
h->ref_count[list],
|
||||
frame_list[list],
|
||||
len[list],
|
||||
s->picture_structure,
|
||||
short_len[list]);
|
||||
|
||||
// swap the two first elements of L1 when L0 and L1 are identical
|
||||
if(list && len[0] > 1 && len[0] == len[1])
|
||||
for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0]; i++)
|
||||
if(i == len[0]){
|
||||
FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
|
||||
break;
|
||||
}
|
||||
|
||||
if(len[list] < h->ref_count[ list ])
|
||||
memset(&h->default_ref_list[list][len[list]], 0, sizeof(Picture)*(h->ref_count[ list ] - len[list]));
|
||||
}
|
||||
|
||||
|
||||
}else{
|
||||
int index=0;
|
||||
int short_len;
|
||||
for(i=0; i<h->short_ref_count; i++){
|
||||
int sel;
|
||||
sel = h->short_ref[i]->reference | structure_sel;
|
||||
if(sel != PICT_FRAME) continue;
|
||||
frame_list[0][index ]= *h->short_ref[i];
|
||||
frame_list[0][index++].pic_id= h->short_ref[i]->frame_num;
|
||||
}
|
||||
short_len = index;
|
||||
for(i = 0; i < 16; i++){
|
||||
int sel;
|
||||
if(h->long_ref[i] == NULL) continue;
|
||||
sel = h->long_ref[i]->reference | structure_sel;
|
||||
if(sel != PICT_FRAME) continue;
|
||||
frame_list[0][index ]= *h->long_ref[i];
|
||||
frame_list[0][index++].pic_id= i;
|
||||
}
|
||||
|
||||
if (FIELD_PICTURE)
|
||||
index = split_field_ref_list(h->default_ref_list[0],
|
||||
h->ref_count[0], frame_list[0],
|
||||
index, s->picture_structure,
|
||||
short_len);
|
||||
|
||||
if(index < h->ref_count[0])
|
||||
memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
|
||||
len = build_def_list(h->default_ref_list[0] , h->short_ref, h->short_ref_count, 0, s->picture_structure);
|
||||
len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16 , 1, s->picture_structure);
|
||||
assert(len <= 32);
|
||||
if(len < h->ref_count[0])
|
||||
memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
|
||||
}
|
||||
#ifdef TRACE
|
||||
for (i=0; i<h->ref_count[0]; i++) {
|
||||
|
|
Loading…
Reference in New Issue