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avformat/webpenc: preserve single image VP8X flags 

Fixes Ticket4087

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-11-07 04:08:18 +01:00
parent b1c99f4c5f
commit c11f731768
1 changed files with 26 additions and 12 deletions
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38
libavformat/webpenc.c
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@ -58,25 +58,39 @@ static int flush(AVFormatContext *s, int trailer, int64_t pts)
if (w->last_pkt.size) {
int skip = 0;
unsigned flags = 0;
int vp8x = 0;
if (AV_RL32(w->last_pkt.data) == AV_RL32("RIFF"))
skip = 12;
if (AV_RL32(w->last_pkt.data + skip) == AV_RL32("VP8X"))
if (AV_RL32(w->last_pkt.data + skip) == AV_RL32("VP8X")) {
flags |= w->last_pkt.data[skip + 4 + 4];
vp8x = 1;
skip += AV_RL32(w->last_pkt.data + skip + 4) + 8;
}
w->frame_count ++;
if (w->frame_count == 1 && !trailer) {
avio_write(s->pb, "VP8X", 4);
avio_wl32(s->pb, 10);
avio_w8(s->pb, 2+16);
avio_wl24(s->pb, 0);
avio_wl24(s->pb, st->codec->width - 1);
avio_wl24(s->pb, st->codec->height - 1);
avio_write(s->pb, "ANIM", 4);
avio_wl32(s->pb, 6);
avio_wl32(s->pb, 0xFFFFFFFF);
avio_wl16(s->pb, w->loop);
if (w->frame_count == 1) {
if (!trailer) {
vp8x = 1;
flags |= 2 + 16;
}
if (vp8x) {
avio_write(s->pb, "VP8X", 4);
avio_wl32(s->pb, 10);
avio_w8(s->pb, flags);
avio_wl24(s->pb, 0);
avio_wl24(s->pb, st->codec->width - 1);
avio_wl24(s->pb, st->codec->height - 1);
}
if (!trailer) {
avio_write(s->pb, "ANIM", 4);
avio_wl32(s->pb, 6);
avio_wl32(s->pb, 0xFFFFFFFF);
avio_wl16(s->pb, w->loop);
}
}
if (w->frame_count > trailer) {