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paranoid locking

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This commit is contained in:
David Rose 2011-11-15 23:59:59 +00:00
parent 8801ec38d7
commit 5b7c19ee73
1 changed files with 4 additions and 2 deletions
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6
panda/src/movies/ffmpegVideoCursor.cxx
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@ -952,6 +952,10 @@ seek(int frame, bool backward) {
static PStatCollector seek_pcollector("*:FFMPEG Video Decoding:Seek");
PStatTimer timer(seek_pcollector);
// Protect the call to av_seek_frame() in a global lock, just to be
// paranoid.
ReMutexHolder av_holder(_av_lock);
PN_int64 target_ts = (PN_int64)frame;
if (target_ts < (PN_int64)(_initial_dts)) {
// Attempts to seek before the first packet will fail.
@ -992,8 +996,6 @@ seek(int frame, bool backward) {
// it, and don't do this.
/*
ReMutexHolder av_holder(_av_lock);
avcodec_close(_video_ctx);
AVCodec *pVideoCodec = avcodec_find_decoder(_video_ctx->codec_id);
if (pVideoCodec == 0) {