mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 11:11:08 +00:00
7012e88090
Conflicts: gst-libs/gst/audio/audio.h gst-libs/gst/audio/gstaudiodecoder.c gst-libs/gst/audio/gstaudiodecoder.h gst-libs/gst/audio/gstaudioencoder.c gst-libs/gst/audio/gstbaseaudioencoder.h gst/playback/Makefile.am gst/playback/gstplaybin.c gst/playback/gstplaysink.c gst/playback/gstplaysinkvideoconvert.c gst/playback/gstsubtitleoverlay.c gst/videorate/gstvideorate.c gst/videoscale/gstvideoscale.c win32/common/libgstaudio.def
127 lines
5.7 KiB
Text
127 lines
5.7 KiB
Text
*************** gst_base_audio_src_create (GstBaseSrc * bsrc, guint64 offset, guint length,
|
|
*** 865,935 ****
|
|
running_time_segment = running_time_sample / sps;
|
|
|
|
/* the segment currently read from the ringbuffer */
|
|
- current_segment = sample / sps;
|
|
-
|
|
- /* the skew we have between running_time and the ringbuffertime */
|
|
- segment_skew = running_time_segment - current_segment;
|
|
-
|
|
- GST_DEBUG_OBJECT (bsrc, "\n running_time = %" GST_TIME_FORMAT
|
|
- "\n timestamp = %" GST_TIME_FORMAT
|
|
- "\n running_time_segment = %d"
|
|
- "\n current_segment = %d"
|
|
- "\n segment_skew = %d",
|
|
GST_TIME_ARGS (running_time),
|
|
GST_TIME_ARGS (timestamp),
|
|
- running_time_segment, current_segment, segment_skew);
|
|
|
|
/* Resync the ringbuffer if:
|
|
- * 1. We are more than the length of the ringbuffer in front.
|
|
- * The length of the ringbuffer then gets to dictate
|
|
- * the threshold for what is concidered "too far ahead"
|
|
- *
|
|
- * 2. We are more than the length of the ringbuffer behind.
|
|
* The length of the ringbuffer then gets to dictate
|
|
* the threshold for what is concidered "too late"
|
|
*
|
|
- * 3. If this is our first buffer.
|
|
* We know that we should catch up to running_time
|
|
* the first time we are ran.
|
|
*/
|
|
- if ((segment_skew <= -ringbuffer->spec.segtotal) ||
|
|
- (segment_skew >= ringbuffer->spec.segtotal) ||
|
|
- (current_segment == 0)) {
|
|
- gint segments_written;
|
|
- gint first_segment;
|
|
- gint last_segment;
|
|
- gint new_last_segment;
|
|
gint segment_diff;
|
|
- gint new_first_segment;
|
|
guint64 new_sample;
|
|
|
|
- /* we are going to say that the last segment was captured at the current time
|
|
- (running_time), minus one segment of creation-latency in the ringbuffer.
|
|
- This can be thought of as: The segment arrived in the ringbuffer at time X, and
|
|
- that means it was created at time X - (one segment). */
|
|
- new_last_segment = running_time_segment - 1;
|
|
-
|
|
- /* for better readablity */
|
|
- first_segment = current_segment;
|
|
-
|
|
- /* get the amount of segments written from the device by now */
|
|
- segments_written = g_atomic_int_get (&ringbuffer->segdone);
|
|
-
|
|
- /* subtract the base to segments_written to get the number of the
|
|
- last written segment in the ringbuffer (one segment written = segment 0) */
|
|
- last_segment = segments_written - ringbuffer->segbase - 1;
|
|
-
|
|
- /* we see how many segments the ringbuffer was timeshifted */
|
|
- segment_diff = new_last_segment - last_segment;
|
|
|
|
- /* we move the first segment an equal amount */
|
|
- new_first_segment = first_segment + segment_diff;
|
|
|
|
- /* and we also move the segmentbase the same amount */
|
|
- ringbuffer->segbase -= segment_diff;
|
|
|
|
/* we calculate the new sample value */
|
|
- new_sample = ((guint64) new_first_segment) * sps;
|
|
|
|
/* and get the relative time to this -> our new timestamp */
|
|
timestamp =
|
|
--- 874,926 ----
|
|
running_time_segment = running_time_sample / sps;
|
|
|
|
/* the segment currently read from the ringbuffer */
|
|
+ last_read_segment = sample / sps;
|
|
+
|
|
+ /* the skew we have between running_time and the ringbuffertime (last written to) */
|
|
+ segment_skew = running_time_segment - last_written_segment;
|
|
+
|
|
+ GST_DEBUG_OBJECT (bsrc,
|
|
+ "\n running_time = %" GST_TIME_FORMAT
|
|
+ "\n timestamp = %" GST_TIME_FORMAT
|
|
+ "\n running_time_segment = %d"
|
|
+ "\n last_written_segment = %d"
|
|
+ "\n segment_skew (running time segment - last_written_segment) = %d"
|
|
+ "\n last_read_segment = %d",
|
|
GST_TIME_ARGS (running_time),
|
|
GST_TIME_ARGS (timestamp),
|
|
+ running_time_segment,
|
|
+ last_written_segment,
|
|
+ segment_skew,
|
|
+ last_read_segment);
|
|
|
|
/* Resync the ringbuffer if:
|
|
+
|
|
+ * 1. We are more than the length of the ringbuffer behind.
|
|
* The length of the ringbuffer then gets to dictate
|
|
* the threshold for what is concidered "too late"
|
|
*
|
|
+ * 2. If this is our first buffer.
|
|
* We know that we should catch up to running_time
|
|
* the first time we are ran.
|
|
*/
|
|
+ if ((segment_skew >= ringbuffer->spec.segtotal) ||
|
|
+ (last_read_segment == 0))
|
|
+ {
|
|
+ gint new_read_segment;
|
|
gint segment_diff;
|
|
guint64 new_sample;
|
|
|
|
+ /* the difference between running_time and the last written segment */
|
|
+ segment_diff = running_time_segment - last_written_segment;
|
|
|
|
+ /* advance the ringbuffer */
|
|
+ gst_ring_buffer_advance(ringbuffer, segment_diff);
|
|
|
|
+ /* we move the new read segment to the last known written segment */
|
|
+ new_read_segment = g_atomic_int_get (&ringbuffer->segdone) - ringbuffer->segbase;
|
|
|
|
/* we calculate the new sample value */
|
|
+ new_sample = ((guint64) new_read_segment) * sps;
|
|
|
|
/* and get the relative time to this -> our new timestamp */
|
|
timestamp =
|