demux: workaround for -demuxer mpegts -correct-pts

Using -demuxer mpegts -correct-pts triggered the assertion in
ds_get_packet2(). This is not surprising, because the correct-pts code
was changed to accept _complete_ packets, while all the old demuxers
(including the mpegts demuxer) require you to use "partial" packet
reads, together with the video_read_frame(). (That function actually
parses video frames, so fragments of the original "packets" can be fed
to the decoder.)

However, it returns out demux_ts packet's are mostly useable. demux_ts
still adds an offset (i.e. ds->buffer_pos != 0) to the packets when
calling internal parser functions, such as in parse_es.c. While this is
unclean design due to mplayer's old video demuxing/decoding path, it can
be easily be made work by modifying the packet as returned by
ds_get_packet2(). We also have to change the packet freeing code, as
demux_packet->buffer doesn't have to point to the start of the memory
allocation anymore.

MPlayer handles this "correctly" because it doesn't have a function that
reads a complete packet.

1 files changed, 1 insertions, 0 deletions

diff --git a/demux/demux_packet.h b/demux/demux_packet.h
index 39f10b9b74..25731d914a 100644
--- a/demux/demux_packet.h
+++ b/demux/demux_packet.h
@@ -32,6 +32,7 @@ typedef struct demux_packet {
     unsigned char *buffer;
     bool keyframe;
     struct demux_packet *next;
+    void *allocation;
     struct AVPacket *avpacket;   // original libavformat packet (demux_lavf)
 } demux_packet_t;