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avformat/mov: get heif image mirroring from imir box

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Complements 76eb3e5ff3.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-09-30 18:27:17 -03:00
parent f225e6f3c6
commit 7573f02840
2 changed files with 26 additions and 3 deletions
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2
libavformat/isom.h
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@ -284,6 +284,8 @@ typedef struct HEIFItem {
int width;
int height;
int rotation;
int hflip;
int vflip;
int type;
int is_idat_relative;
uint8_t *icc_profile;

27
libavformat/mov.c
View File

@ -8994,6 +8994,25 @@ static int mov_read_irot(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
static int mov_read_imir(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
HEIFItem *item;
int axis;
axis = avio_r8(pb) & 0x1;
av_log(c->fc, AV_LOG_TRACE, "imir: item_id %d, axis %u\n",
c->cur_item_id, axis);
item = heif_cur_item(c);
if (item) {
item->hflip = axis;
item->vflip = !axis;
}
return 0;
}
static int mov_read_iprp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
typedef struct MOVAtoms {
@ -9218,6 +9237,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('p','i','t','m'), mov_read_pitm },
{ MKTAG('e','v','c','C'), mov_read_glbl },
{ MKTAG('i','d','a','t'), mov_read_idat },
{ MKTAG('i','m','i','r'), mov_read_imir },
{ MKTAG('i','r','e','f'), mov_read_iref },
{ MKTAG('i','s','p','e'), mov_read_ispe },
{ MKTAG('i','r','o','t'), mov_read_irot },
@ -9922,6 +9942,7 @@ static int set_display_matrix_from_item(AVPacketSideData **coded_side_data, int
* av_display_rotation_set() expects its argument to be
* oriented clockwise, so we need to negate it. */
av_display_rotation_set(matrix, -item->rotation);
av_display_matrix_flip(matrix, item->hflip, item->vflip);
return 0;
}
@ -9967,7 +9988,7 @@ static int read_image_grid(AVFormatContext *s, const HEIFGrid *grid,
return ret;
}
/* rotation */
if (item->rotation) {
if (item->rotation || item->hflip || item->vflip) {
int ret = set_display_matrix_from_item(&tile_grid->coded_side_data,
&tile_grid->nb_coded_side_data, item);
if (ret < 0)
@ -10066,7 +10087,7 @@ static int read_image_iovl(AVFormatContext *s, const HEIFGrid *grid,
tile_grid->coded_height = (flags & 1) ? avio_rb32(s->pb) : avio_rb16(s->pb);
/* rotation */
if (item->rotation) {
if (item->rotation || item->hflip || item->vflip) {
int ret = set_display_matrix_from_item(&tile_grid->coded_side_data,
&tile_grid->nb_coded_side_data, item);
if (ret < 0)
@ -10283,7 +10304,7 @@ static int mov_read_header(AVFormatContext *s)
if (item->item_id == mov->primary_item_id)
st->disposition |= AV_DISPOSITION_DEFAULT;
if (item->rotation) {
if (item->rotation || item->hflip || item->vflip) {
int ret = set_display_matrix_from_item(&st->codecpar->coded_side_data,
&st->codecpar->nb_coded_side_data, item);
if (ret < 0)