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qtmux: Do timecode handling per track, not per muxer instance

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There could be multiple video tracks with timecodes.
This commit is contained in:
Sebastian Dröge 2017-03-22 18:52:51 +02:00
parent d76bd1913f
commit cb6aab8685
2 changed files with 39 additions and 35 deletions
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64
gst/isomp4/gstqtmux.c
View file

@ -541,6 +541,12 @@ gst_qt_mux_pad_reset (GstQTPad * qtpad)
/* reference owned elsewhere */
qtpad->tfra = NULL;
qtpad->first_pts = GST_CLOCK_TIME_NONE;
qtpad->tc_pos = -1;
if (qtpad->first_tc)
gst_video_time_code_free (qtpad->first_tc);
qtpad->first_tc = NULL;
}
/*
@ -622,11 +628,6 @@ gst_qt_mux_reset (GstQTMux * qtmux, gboolean alloc)
qtmux->last_moov_update = GST_CLOCK_TIME_NONE;
qtmux->muxed_since_last_update = 0;
qtmux->reserved_duration_remaining = GST_CLOCK_TIME_NONE;
qtmux->first_pts = GST_CLOCK_TIME_NONE;
qtmux->tc_pos = -1;
if (qtmux->first_tc)
gst_video_time_code_free (qtmux->first_tc);
qtmux->first_tc = NULL;
}
static void
@ -2595,14 +2596,14 @@ gst_qt_mux_update_edit_lists (GstQTMux * qtmux)
}
static GstFlowReturn
gst_qt_mux_update_timecode (GstQTMux * qtmux)
gst_qt_mux_update_timecode (GstQTMux * qtmux, GstQTPad * qtpad)
{
GstSegment segment;
GstBuffer *buf;
GstMapInfo map;
guint64 offset = qtmux->tc_pos;
guint64 offset = qtpad->tc_pos;
g_assert (qtmux->tc_pos != -1);
g_assert (qtpad->tc_pos != -1);
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = offset;
@ -2612,11 +2613,11 @@ gst_qt_mux_update_timecode (GstQTMux * qtmux)
gst_buffer_map (buf, &map, GST_MAP_WRITE);
GST_WRITE_UINT32_BE (map.data,
gst_video_time_code_frames_since_daily_jam (qtmux->first_tc));
gst_video_time_code_frames_since_daily_jam (qtpad->first_tc));
gst_buffer_unmap (buf, &map);
/* Reset this value, so the timecode won't be re-rewritten */
qtmux->tc_pos = -1;
qtpad->tc_pos = -1;
return gst_qt_mux_send_buffer (qtmux, buf, &offset, FALSE);
}
@ -2627,6 +2628,7 @@ gst_qt_mux_stop_file (GstQTMux * qtmux)
gboolean ret = GST_FLOW_OK;
guint64 offset = 0, size = 0;
gboolean large_file;
GSList *walk;
GST_DEBUG_OBJECT (qtmux, "Updating remaining values and sending last data");
@ -2641,12 +2643,16 @@ gst_qt_mux_stop_file (GstQTMux * qtmux)
}
gst_qt_mux_update_global_statistics (qtmux);
if (qtmux->tc_pos != -1) {
/* File is being stopped and timecode hasn't been updated. Update it now
* with whatever we have */
ret = gst_qt_mux_update_timecode (qtmux);
if (ret != GST_FLOW_OK)
return ret;
for (walk = qtmux->collect->data; walk; walk = walk->next) {
GstQTPad *qtpad = (GstQTPad *) walk->data;
if (qtpad->tc_pos != -1) {
/* File is being stopped and timecode hasn't been updated. Update it now
* with whatever we have */
ret = gst_qt_mux_update_timecode (qtmux, qtpad);
if (ret != GST_FLOW_OK)
return ret;
}
}
switch (qtmux->mux_mode) {
@ -3104,7 +3110,7 @@ static GstFlowReturn
gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
GstBuffer * buf, GstFlowReturn ret)
{
if (buf != NULL && (pad->tc_trak == NULL || qtmux->tc_pos != -1)) {
if (buf != NULL && (pad->tc_trak == NULL || pad->tc_pos != -1)) {
GstVideoTimeCodeMeta *tc_meta = gst_buffer_get_video_time_code_meta (buf);
if (tc_meta) {
GstVideoTimeCode *tc = &tc_meta->tc;
@ -3113,7 +3119,7 @@ gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
guint32 frames_since_daily_jam;
/* This means we never got a timecode before */
if (qtmux->first_tc == NULL) {
if (pad->first_tc == NULL) {
#ifndef GST_DISABLE_GST_DEBUG
gchar *tc_str = gst_video_time_code_to_string (tc);
GST_DEBUG_OBJECT (qtmux, "Found first timecode %s", tc_str);
@ -3121,18 +3127,18 @@ gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
#endif
g_assert (pad->tc_trak == NULL);
tc_buf = gst_buffer_new_allocate (NULL, 4, NULL);
qtmux->first_tc = gst_video_time_code_copy (tc);
pad->first_tc = gst_video_time_code_copy (tc);
/* If frames are out of order, the frame we're currently getting might
* not be the first one. Just write a 0 timecode for now and wait
* until we receive a timecode that's lower than the current one */
if (pad->is_out_of_order) {
qtmux->first_pts = GST_BUFFER_PTS (buf);
pad->first_pts = GST_BUFFER_PTS (buf);
frames_since_daily_jam = 0;
/* Position to rewrite */
qtmux->tc_pos = qtmux->mdat_size;
pad->tc_pos = qtmux->mdat_size;
} else {
frames_since_daily_jam =
gst_video_time_code_frames_since_daily_jam (qtmux->first_tc);
gst_video_time_code_frames_since_daily_jam (pad->first_tc);
frames_since_daily_jam = GUINT32_TO_BE (frames_since_daily_jam);
}
/* Write the timecode trak now */
@ -3143,7 +3149,7 @@ gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
atom_tref_add_entry (pad->trak->tref, pad->tc_trak->tkhd.track_ID);
atom_trak_set_timecode_type (pad->tc_trak, qtmux->context,
qtmux->first_tc);
pad->first_tc);
szret = gst_buffer_fill (tc_buf, 0, &frames_since_daily_jam, 4);
g_assert (szret == 4);
@ -3154,10 +3160,10 @@ gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
} else if (pad->is_out_of_order) {
/* Check for a lower timecode than the one stored */
g_assert (pad->tc_trak != NULL);
if (GST_BUFFER_DTS (buf) <= qtmux->first_pts) {
if (gst_video_time_code_compare (tc, qtmux->first_tc) == -1) {
gst_video_time_code_free (qtmux->first_tc);
qtmux->first_tc = gst_video_time_code_copy (tc);
if (GST_BUFFER_DTS (buf) <= pad->first_pts) {
if (gst_video_time_code_compare (tc, pad->first_tc) == -1) {
gst_video_time_code_free (pad->first_tc);
pad->first_tc = gst_video_time_code_copy (tc);
}
} else {
guint64 bk_size = qtmux->mdat_size;
@ -3165,7 +3171,7 @@ gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
/* If this frame's DTS is after the first PTS received, it means
* we've already received the first frame to be presented. Otherwise
* the decoder would need to go back in time */
gst_qt_mux_update_timecode (qtmux);
gst_qt_mux_update_timecode (qtmux, pad);
/* Reset writing position */
gst_segment_init (&segment, GST_FORMAT_BYTES);
@ -5031,8 +5037,6 @@ gst_qt_mux_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads_start (qtmux->collect);
qtmux->state = GST_QT_MUX_STATE_STARTED;
qtmux->first_tc = NULL;
qtmux->tc_pos = -1;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;

10
gst/isomp4/gstqtmux.h
View file

@ -144,6 +144,11 @@ struct _GstQTPad
GstQTPadPrepareBufferFunc prepare_buf_func;
GstQTPadSetCapsFunc set_caps;
GstQTPadCreateEmptyBufferFunc create_empty_buffer;
/* SMPTE timecode */
GstVideoTimeCode *first_tc;
GstClockTime first_pts;
guint64 tc_pos;
};
typedef enum _GstQTMuxState
@ -212,11 +217,6 @@ struct _GstQTMux
/* Set when tags are received, cleared when written to moov */
gboolean tags_changed;
/* SMPTE timecode */
GstVideoTimeCode *first_tc;
GstClockTime first_pts;
guint64 tc_pos;
/* fragmented file index */
AtomMFRA *mfra;