From 289b5e385d114d002654ee3188bcfb43deb26aee Mon Sep 17 00:00:00 2001 From: Frank Enderle Date: Sun, 11 Apr 2010 13:03:25 +0200 Subject: Report NBC buffer stats to the application using new event XINE_EVENT_NBC_STATS This event reports the buffer status for network streams (NBC) back to the application, providing a way to measure if the stream delivers data fast enough. This enables the application to slow down the stream playback to get the buffers filling more quickly. (This is only a sample application of the event.) The event reports all vital data like fill percentage, remaining buffer in seconds and discontinuity, separately for audio and video, whether the nbc layer is actually buffering, the operation type (put or get) and also if the buffering is enabled at all. In essence, it's the output you get from nbc if you run xine-lib in verbose mode on the console, but in raw data. --- src/input/net_buf_ctrl.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/input/net_buf_ctrl.c b/src/input/net_buf_ctrl.c index e8af1ae3f..ba17423fb 100644 --- a/src/input/net_buf_ctrl.c +++ b/src/input/net_buf_ctrl.c @@ -96,7 +96,6 @@ static void report_progress (xine_stream_t *stream, int p) { xine_event_send (stream, &event); } - static void nbc_set_speed_pause (nbc_t *this) { xine_stream_t *stream = this->stream; @@ -138,6 +137,29 @@ static void display_stats (nbc_t *this) { fflush(stdout); } +static void report_stats (nbc_t *this, int type) { + xine_event_t event; + xine_nbc_stats_data_t bs; + + bs.v_percent = this->video_fifo_fill; + bs.v_remaining = this->video_fifo_length; + bs.v_bitrate = this->video_br; + bs.v_in_disc = this->video_in_disc; + bs.a_percent = this->audio_fifo_fill; + bs.a_remaining = this->audio_fifo_length; + bs.a_bitrate = this->audio_br; + bs.a_in_disc = this->audio_in_disc; + bs.buffering = this->buffering; + bs.enabled = this->enabled; + bs.type = type; + + event.type = XINE_EVENT_NBC_STATS; + event.data = &bs; + event.data_length = sizeof (xine_nbc_stats_data_t); + + xine_event_send (this->stream, &event); +} + /* Try to compute the length of the fifo in 1/1000 s * 2 methods : * if the bitrate is known @@ -347,6 +369,8 @@ static void nbc_put_cb (fifo_buffer_t *fifo, } if(this->stream->xine->verbosity >= XINE_VERBOSITY_DEBUG) display_stats(this); + + report_stats(this, 0); } } else { @@ -466,6 +490,8 @@ static void nbc_get_cb (fifo_buffer_t *fifo, if(this->stream->xine->verbosity >= XINE_VERBOSITY_DEBUG) display_stats(this); + + report_stats(this, 1); } } else { /* discontinuity management */ -- cgit v1.2.3