AVFrame *out, *top, *bottom;
char buf[1024] = { 0 };
int64_t tf, bf;
- char hint = '=';
+ int tfactor = 0, bfactor = 1;
+ char hint = '=', field = '=';
int p;
av_frame_free(&s->frame[0]);
s->line++;
if (buf[0] == '#' || buf[0] == ';') {
continue;
+ } else if (sscanf(buf, "%"PRId64",%"PRId64" %c %c", &tf, &bf, &hint, &field) == 4) {
+ ;
} else if (sscanf(buf, "%"PRId64",%"PRId64" %c", &tf, &bf, &hint) == 3) {
;
} else if (sscanf(buf, "%"PRId64",%"PRId64"", &tf, &bf) == 2) {
av_assert0(0);
}
+ switch (field) {
+ case 'b':
+ tfactor = 1;
+ top = bottom;
+ break;
+ case 't':
+ bfactor = 0;
+ bottom = top;
+ break;
+ case '=':
+ break;
+ default:
+ av_log(ctx, AV_LOG_ERROR, "Invalid field: %c.\n", field);
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
switch (hint) {
case '+':
out->interlaced_frame = 1;
break;
case '=':
break;
+ case 'b':
+ tfactor = 1;
+ top = bottom;
+ break;
+ case 't':
+ bfactor = 0;
+ bottom = top;
+ break;
default:
av_log(ctx, AV_LOG_ERROR, "Invalid hint: %c.\n", hint);
av_frame_free(&out);
for (p = 0; p < s->nb_planes; p++) {
av_image_copy_plane(out->data[p],
out->linesize[p] * 2,
- top->data[p],
+ top->data[p] + tfactor * top->linesize[p],
top->linesize[p] * 2,
s->planewidth[p],
(s->planeheight[p] + 1) / 2);
av_image_copy_plane(out->data[p] + out->linesize[p],
out->linesize[p] * 2,
- bottom->data[p] + bottom->linesize[p],
+ bottom->data[p] + bfactor * bottom->linesize[p],
bottom->linesize[p] * 2,
s->planewidth[p],
(s->planeheight[p] + 1) / 2);