Pipeline blocked from ready to paused

[Xinheng]

I have an app android to play hls streams from Wowza. My pipeline works fine
in most cases but when I test it on *Android 7* for *some special streams*,
the pipeline just hangs on ready state without any error. It never gets into
paused state.

These special streams have low fps (about 5). For now, Android 7 and these
special streams is the only condition to make my pipeline hang.

Here is the log when it works fine:

07-18 14:30:33.945 V/GStreamer+tsdemux: 0:00:35.554711642 0xb339ba30
tsdemux.c:2156:gst_ts_demux_queue_data CONTINUITY: Got expected 10
07-18 14:30:33.945 V/GStreamer+tsdemux: 0:00:35.554779434 0xb339ba30
tsdemux.c:2186:gst_ts_demux_queue_data BUFFER: appending data
07-18 14:30:33.945 V/GStreamer+tsdemux: 0:00:35.554845601 0xb339ba30
tsdemux.c:2716:gst_ts_demux_handle_packet current_size:386,
expected_size:386
07-18 14:30:33.945 V/GStreamer+tsdemux: 0:00:35.554910517 0xb339ba30
tsdemux.c:2719:gst_ts_demux_handle_packet pushing complete packet
07-18 14:30:33.945 D/GStreamer+tsdemux: 0:00:35.554993767 0xb339ba30
tsdemux.c:2471:gst_ts_demux_push_pending_data:<u:audio_0101>
stream:0xae5a4200, pid:0x0101 stream_type:15 state:2
07-18 14:30:33.945 D/GStreamer+tsdemux: 0:00:35.555092809 0xb339ba30
tsdemux.c:2625:gst_ts_demux_push_pending_data:<u:audio_0101> stream->pts
0:00:01.487000000
07-18 14:30:33.945 D/GStreamer+tsdemux: 0:00:35.555187976 0xb339ba30
tsdemux.c:2646:gst_ts_demux_push_pending_data:<u:audio_0101> Pushing buffer
with PTS: 0:00:01.487000000 , DTS: 99:99:99.999999999
07-18 14:30:33.975 D/libGLESv2: STS_GLApi : DTS is not allowed for Package :
com.interactivelayer.gstreamersampleapp
                                
                                [ 07-18 14:30:34.000 23465:24270 W/        
]
                                GLES OOM error: failed to allocate CPU
memory (gles2_queryp_begin_query_internal at
hardware/samsung_slsi/Ares-r7p0-DDK/product/gles/src/query/mali_gles2_query_api.c:289)
                                
                                
                                [ 07-18 14:30:34.000 23465:24270 W/        
]
                                GLES OOM error: failed to allocate CPU
memory (gles2_queryp_begin_query_internal at
hardware/samsung_slsi/Ares-r7p0-DDK/product/gles/src/query/mali_gles2_query_api.c:289)
                                
                                
                                [ 07-18 14:30:34.000 23465:24270 W/        
]
                                GLES OOM error: failed to allocate CPU
memory (gles2_queryp_begin_query_internal at
hardware/samsung_slsi/Ares-r7p0-DDK/product/gles/src/query/mali_gles2_query_api.c:289)
07-18 14:30:34.010 D/mali_winsys: new_window_surface returns 0x3000, 
[1600x1200]-format:2
07-18 14:30:34.045 D/GStreamer+player: 0:00:35.657326726 0x990b5680
jni/player.c:112:set_ui_message Setting message to: State changed to PAUSED
07-18 14:30:34.045 I/GStreamer: GStreamer message: State changed to PAUSED
07-18 14:30:34.045 D/GStreamer+tsdemux: 0:00:35.658348600 0xae61b720
tsdemux.c:529:gst_ts_demux_srcpad_query query latency


Here is the log when it hangs:

07-18 11:08:37.952 V/GStreamer+tsdemux: 0:00:06.979890226 0x7a6478da30
tsdemux.c:2147:gst_ts_demux_queue_data pid: 0x0101 state:2
07-18 11:08:37.952 V/GStreamer+tsdemux: 0:00:06.979928149 0x7a6478da30
tsdemux.c:2156:gst_ts_demux_queue_data CONTINUITY: Got expected 10
07-18 11:08:37.952 V/GStreamer+tsdemux: 0:00:06.979960726 0x7a6478da30
tsdemux.c:2186:gst_ts_demux_queue_data BUFFER: appending data
07-18 11:08:37.952 V/GStreamer+tsdemux: 0:00:06.979997533 0x7a6478da30
tsdemux.c:2716:gst_ts_demux_handle_packet current_size:386,
expected_size:386
07-18 11:08:37.952 V/GStreamer+tsdemux: 0:00:06.980028957 0x7a6478da30
tsdemux.c:2719:gst_ts_demux_handle_packet pushing complete packet
07-18 11:08:37.952 D/GStreamer+tsdemux: 0:00:06.980075380 0x7a6478da30
tsdemux.c:2471:gst_ts_demux_push_pending_data:<u:audio_0101>
stream:0x7a329f2400, pid:0x0101 stream_type:15 state:2
07-18 11:08:37.953 D/GStreamer+tsdemux: 0:00:06.980128418 0x7a6478da30
tsdemux.c:2625:gst_ts_demux_push_pending_data:<u:audio_0101> stream->pts
0:00:01.487000000
07-18 11:08:37.953 D/GStreamer+tsdemux: 0:00:06.980185572 0x7a6478da30
tsdemux.c:2646:gst_ts_demux_push_pending_data:<u:audio_0101> Pushing buffer
with PTS: 0:00:01.487000000 , DTS: 99:99:99.999999999

One continues after "Pushing buffer with PTS: 0:00:01.487000000 , DTS:
99:99:99.999999999" while another one stops from there forever.

Could anyone give me some hints to let me understand it? Thanks in advance.



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