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deps/media-playback: Start decoding regardless of keyframe

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Currently, when media-playback is used with a network address, video has
to wait for the first keyframe before it starts decoding.  This is
probably not wise because the first packet of video may contain
additional header information, and because audio is forced to wait and
buffer while waiting for a keyframe, potentially causing a lot of audio
to get backed up unnecessarily which could inadvertently cause sync or
audio playback issues.

So, instead of waiting for a keyframe before decoding starts, decode
right away, and make it wait for a keyframe before calling the video
callback instead.
This commit is contained in:
jp9000 2017-05-29 19:00:44 -07:00
parent ea6bdf58e0
commit 0302a4e7f7
2 changed files with 7 additions and 12 deletions
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12
deps/media-playback/media-playback/decode.c vendored
View File

@ -279,18 +279,6 @@ bool mp_decode_next(struct mp_decode *d)
}
}
if (!d->audio && d->m->is_network && !d->got_first_keyframe) {
if (d->pkt.flags & AV_PKT_FLAG_KEY) {
d->got_first_keyframe = true;
} else {
av_packet_unref(&d->orig_pkt);
av_init_packet(&d->orig_pkt);
av_init_packet(&d->pkt);
d->packet_pending = false;
return true;
}
}
ret = decode_packet(d, &got_frame);
if (!got_frame && ret == 0) {

7
deps/media-playback/media-playback/media.c vendored
View File

@ -357,6 +357,13 @@ static void mp_media_next_video(mp_media_t *m, bool preload)
frame->height = f->height;
frame->flip = flip;
if (m->is_network && !d->got_first_keyframe) {
if (!f->key_frame)
return;
d->got_first_keyframe = true;
}
if (preload)
m->v_preload_cb(m->opaque, frame);
else