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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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tsmux: Add negative DTS support
Use the saved DTS, make it signed and pass that to the stream muxer. This preserves the running time sign. All usage of -1 as invalid TS are now replaced with G_MININT64. Negative values will be seen as wrap-around point, but the delta between PTS and DTS will remain correct. Demuxers don't care about absolute values, they only cares about deltas. https://bugzilla.gnome.org/show_bug.cgi?id=740575
This commit is contained in:
parent
8432116df2
commit
e000a6f0a4
4 changed files with 77 additions and 59 deletions
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@ -331,7 +331,8 @@ static void
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mpegtsmux_pad_reset (MpegTsPadData * pad_data)
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mpegtsmux_pad_reset (MpegTsPadData * pad_data)
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{
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{
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pad_data->pid = 0;
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pad_data->pid = 0;
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pad_data->min_dts = GST_CLOCK_TIME_NONE;
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pad_data->min_dts = GST_CLOCK_STIME_NONE;
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pad_data->dts = GST_CLOCK_STIME_NONE;
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pad_data->prog_id = -1;
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pad_data->prog_id = -1;
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#if 0
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#if 0
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pad_data->prog_id = -1;
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pad_data->prog_id = -1;
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@ -1035,7 +1036,7 @@ mpegtsmux_clip_inc_running_time (GstCollectPads * pads,
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*outbuf = buf;
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*outbuf = buf;
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/* PTS */
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/* PTS */
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time = GST_BUFFER_TIMESTAMP (buf);
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time = GST_BUFFER_PTS (buf);
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/* invalid left alone and passed */
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/* invalid left alone and passed */
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if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
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if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
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@ -1046,11 +1047,11 @@ mpegtsmux_clip_inc_running_time (GstCollectPads * pads,
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*outbuf = NULL;
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*outbuf = NULL;
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goto beach;
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goto beach;
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} else {
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} else {
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GST_LOG_OBJECT (cdata->pad, "buffer pts %" GST_TIME_FORMAT " -> %"
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GST_LOG_OBJECT (cdata->pad, "buffer pts %" GST_TIME_FORMAT " -> %"
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GST_TIME_FORMAT " running time",
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GST_TIME_FORMAT " running time",
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (time));
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GST_TIME_ARGS (GST_BUFFER_PTS (buf)), GST_TIME_ARGS (time));
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buf = *outbuf = gst_buffer_make_writable (buf);
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buf = *outbuf = gst_buffer_make_writable (buf);
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GST_BUFFER_TIMESTAMP (*outbuf) = time;
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GST_BUFFER_PTS (*outbuf) = time;
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}
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}
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}
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}
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@ -1059,28 +1060,39 @@ mpegtsmux_clip_inc_running_time (GstCollectPads * pads,
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/* invalid left alone and passed */
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/* invalid left alone and passed */
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if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
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if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
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time = gst_segment_to_running_time (&cdata->segment, GST_FORMAT_TIME, time);
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gint sign;
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/* may have to decode out-of-segment, so pass INVALID */
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gint64 dts;
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if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
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GST_DEBUG_OBJECT (cdata->pad, "running dts outside segment");
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} else {
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GST_LOG_OBJECT (cdata->pad, "buffer dts %" GST_TIME_FORMAT " -> %"
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GST_TIME_FORMAT " running time",
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (time));
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if (!GST_CLOCK_TIME_IS_VALID (pad_data->min_dts))
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sign = gst_segment_to_running_time_full (&cdata->segment, GST_FORMAT_TIME,
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pad_data->min_dts = time;
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time, &time);
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if (time < pad_data->min_dts) {
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GST_LOG_OBJECT (cdata->pad, "buffer dts %" GST_TIME_FORMAT " -> %"
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/* Ignore DTS going backward */
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GST_STIME_FORMAT " running time", GST_STIME_ARGS (GST_BUFFER_DTS (buf)),
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GST_WARNING_OBJECT (cdata->pad, "ignoring DTS going backward");
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GST_STIME_ARGS (time));
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time = pad_data->min_dts;
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}
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*outbuf = gst_buffer_make_writable (buf);
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if (sign > 0)
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GST_BUFFER_DTS (*outbuf) = time;
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dts = (gint64) time;
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pad_data->min_dts = time;
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else
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dts = -((gint64) time);
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if (GST_CLOCK_STIME_IS_VALID (pad_data))
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pad_data->min_dts = dts;
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if (dts < pad_data->min_dts) {
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/* Ignore DTS going backward */
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GST_WARNING_OBJECT (cdata->pad, "ignoring DTS going backward");
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dts = pad_data->min_dts;
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}
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}
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*outbuf = gst_buffer_make_writable (buf);
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if (sign > 0)
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GST_BUFFER_DTS (*outbuf) = time;
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else
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GST_BUFFER_DTS (*outbuf) = GST_CLOCK_TIME_NONE;
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pad_data->dts = pad_data->min_dts = dts;
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} else {
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pad_data->dts = GST_CLOCK_STIME_NONE;
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}
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}
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buf = *outbuf;
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buf = *outbuf;
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@ -1103,8 +1115,8 @@ mpegtsmux_collected_buffer (GstCollectPads * pads, GstCollectData * data,
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GstFlowReturn ret = GST_FLOW_OK;
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GstFlowReturn ret = GST_FLOW_OK;
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MpegTsPadData *best = (MpegTsPadData *) data;
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MpegTsPadData *best = (MpegTsPadData *) data;
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TsMuxProgram *prog;
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TsMuxProgram *prog;
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gint64 pts = -1;
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gint64 pts = GST_CLOCK_STIME_NONE;
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guint64 dts = -1;
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gint64 dts = GST_CLOCK_STIME_NONE;
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gboolean delta = TRUE, header = FALSE;
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gboolean delta = TRUE, header = FALSE;
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StreamData *stream_data;
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StreamData *stream_data;
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@ -1140,7 +1152,7 @@ mpegtsmux_collected_buffer (GstCollectPads * pads, GstCollectData * data,
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GstEvent *event;
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GstEvent *event;
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event = check_pending_key_unit_event (mux->force_key_unit_event,
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event = check_pending_key_unit_event (mux->force_key_unit_event,
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&best->collect.segment, GST_BUFFER_TIMESTAMP (buf),
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&best->collect.segment, GST_BUFFER_PTS (buf),
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GST_BUFFER_FLAGS (buf), mux->pending_key_unit_ts);
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GST_BUFFER_FLAGS (buf), mux->pending_key_unit_ts);
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if (event) {
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if (event) {
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GstClockTime running_time;
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GstClockTime running_time;
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@ -1186,18 +1198,19 @@ mpegtsmux_collected_buffer (GstCollectPads * pads, GstCollectData * data,
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if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
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if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
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pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf));
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pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf));
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GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %"
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GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %"
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G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts);
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G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts);
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}
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}
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if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf))) {
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if (GST_CLOCK_STIME_IS_VALID (best->dts)) {
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dts = GSTTIME_TO_MPEGTIME (GST_BUFFER_DTS (buf));
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dts = GSTTIME_TO_MPEGTIME (best->dts);
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GST_DEBUG_OBJECT (mux, "Buffer has DTS %" GST_TIME_FORMAT " dts %"
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GST_DEBUG_OBJECT (mux, "Buffer has DTS %s%" GST_TIME_FORMAT " dts %"
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G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (buf)), dts);
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G_GINT64_FORMAT, best->dts >= 0 ? " " : "-",
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GST_TIME_ARGS (ABS (best->dts)), dts);
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}
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}
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/* should not have a DTS without PTS */
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/* should not have a DTS without PTS */
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if (pts == -1 && dts != -1) {
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if (!GST_CLOCK_STIME_IS_VALID (pts) && GST_CLOCK_STIME_IS_VALID (dts)) {
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GST_DEBUG_OBJECT (mux, "using DTS for unknown PTS");
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GST_DEBUG_OBJECT (mux, "using DTS for unknown PTS");
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pts = dts;
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pts = dts;
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}
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}
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@ -98,10 +98,9 @@ G_BEGIN_DECLS
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#define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */
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#define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */
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#define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */
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#define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */
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#define MPEGTIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
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#define GSTTIME_TO_MPEGTIME(time) \
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GST_MSECOND/10, CLOCK_BASE))
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(((time) > 0 ? (gint64) 1 : (gint64) -1) * \
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#define GSTTIME_TO_MPEGTIME(time) (gst_util_uint64_scale ((time), \
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(gint64) gst_util_uint64_scale (ABS(time), CLOCK_BASE, GST_MSECOND/10))
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CLOCK_BASE, GST_MSECOND/10))
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/* 27 MHz SCR conversions: */
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/* 27 MHz SCR conversions: */
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#define MPEG_SYS_TIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
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#define MPEG_SYS_TIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
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@ -183,8 +182,11 @@ struct MpegTsPadData {
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gint pid;
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gint pid;
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TsMuxStream *stream;
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TsMuxStream *stream;
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/* most recent valid TS for this stream */
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/* most recent valid DTS for this stream */
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GstClockTime min_dts;
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gint64 min_dts;
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/* most recent DTS */
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gint64 dts;
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#if 0
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#if 0
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/* (optional) index writing */
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/* (optional) index writing */
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@ -143,11 +143,11 @@ tsmux_new (void)
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mux->next_stream_pid = TSMUX_START_ES_PID;
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mux->next_stream_pid = TSMUX_START_ES_PID;
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mux->pat_changed = TRUE;
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mux->pat_changed = TRUE;
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mux->last_pat_ts = -1;
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mux->last_pat_ts = G_MININT64;
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mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL;
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mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL;
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mux->si_changed = TRUE;
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mux->si_changed = TRUE;
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mux->last_si_ts = -1;
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mux->last_si_ts = G_MININT64;
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mux->si_interval = TSMUX_DEFAULT_SI_INTERVAL;
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mux->si_interval = TSMUX_DEFAULT_SI_INTERVAL;
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mux->si_sections = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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mux->si_sections = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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@ -363,7 +363,7 @@ tsmux_program_new (TsMux * mux, gint prog_id)
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program = g_slice_new0 (TsMuxProgram);
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program = g_slice_new0 (TsMuxProgram);
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program->pmt_changed = TRUE;
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program->pmt_changed = TRUE;
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program->last_pmt_ts = -1;
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program->last_pmt_ts = G_MININT64;
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program->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL;
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program->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL;
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if (prog_id == 0) {
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if (prog_id == 0) {
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@ -983,13 +983,13 @@ tsmux_write_stream_packet (TsMux * mux, TsMuxStream * stream)
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GList *cur;
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GList *cur;
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cur_pcr = 0;
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cur_pcr = 0;
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if (cur_pts != -1) {
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if (cur_pts != G_MININT64) {
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TS_DEBUG ("TS for PCR stream is %" G_GINT64_FORMAT, cur_pts);
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TS_DEBUG ("TS for PCR stream is %" G_GINT64_FORMAT, cur_pts);
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}
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}
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/* FIXME: The current PCR needs more careful calculation than just
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/* FIXME: The current PCR needs more careful calculation than just
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* writing a fixed offset */
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* writing a fixed offset */
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if (cur_pts != -1) {
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if (cur_pts != G_MININT64) {
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/* CLOCK_BASE >= TSMUX_PCR_OFFSET */
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/* CLOCK_BASE >= TSMUX_PCR_OFFSET */
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cur_pts += CLOCK_BASE;
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cur_pts += CLOCK_BASE;
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cur_pcr = (cur_pts - TSMUX_PCR_OFFSET) *
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cur_pcr = (cur_pts - TSMUX_PCR_OFFSET) *
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@ -1010,7 +1010,7 @@ tsmux_write_stream_packet (TsMux * mux, TsMuxStream * stream)
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}
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}
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/* check if we need to rewrite pat */
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/* check if we need to rewrite pat */
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if (mux->last_pat_ts == -1 || mux->pat_changed)
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if (mux->last_pat_ts == G_MININT64 || mux->pat_changed)
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write_pat = TRUE;
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write_pat = TRUE;
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else if (cur_pts >= mux->last_pat_ts + mux->pat_interval)
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else if (cur_pts >= mux->last_pat_ts + mux->pat_interval)
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write_pat = TRUE;
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write_pat = TRUE;
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@ -1024,7 +1024,7 @@ tsmux_write_stream_packet (TsMux * mux, TsMuxStream * stream)
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}
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}
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/* check if we need to rewrite sit */
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/* check if we need to rewrite sit */
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if (mux->last_si_ts == -1 || mux->si_changed)
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if (mux->last_si_ts == G_MININT64 || mux->si_changed)
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write_si = TRUE;
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write_si = TRUE;
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else if (cur_pts >= mux->last_si_ts + mux->si_interval)
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else if (cur_pts >= mux->last_si_ts + mux->si_interval)
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write_si = TRUE;
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write_si = TRUE;
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@ -1042,7 +1042,7 @@ tsmux_write_stream_packet (TsMux * mux, TsMuxStream * stream)
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TsMuxProgram *program = (TsMuxProgram *) cur->data;
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TsMuxProgram *program = (TsMuxProgram *) cur->data;
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gboolean write_pmt;
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gboolean write_pmt;
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if (program->last_pmt_ts == -1 || program->pmt_changed)
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if (program->last_pmt_ts == G_MININT64 || program->pmt_changed)
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write_pmt = TRUE;
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write_pmt = TRUE;
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else if (cur_pts >= program->last_pmt_ts + program->pmt_interval)
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else if (cur_pts >= program->last_pmt_ts + program->pmt_interval)
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write_pmt = TRUE;
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write_pmt = TRUE;
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@ -1060,9 +1060,9 @@ tsmux_write_stream_packet (TsMux * mux, TsMuxStream * stream)
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pi->packet_start_unit_indicator = tsmux_stream_at_pes_start (stream);
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pi->packet_start_unit_indicator = tsmux_stream_at_pes_start (stream);
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if (pi->packet_start_unit_indicator) {
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if (pi->packet_start_unit_indicator) {
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tsmux_stream_initialize_pes_packet (stream);
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tsmux_stream_initialize_pes_packet (stream);
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if (stream->dts != -1)
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if (stream->dts != G_MININT64)
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stream->dts += CLOCK_BASE;
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stream->dts += CLOCK_BASE;
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if (stream->pts != -1)
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if (stream->pts != G_MININT64)
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stream->pts += CLOCK_BASE;
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stream->pts += CLOCK_BASE;
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}
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}
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pi->stream_avail = tsmux_stream_bytes_avail (stream);
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pi->stream_avail = tsmux_stream_bytes_avail (stream);
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@ -196,8 +196,8 @@ tsmux_stream_new (guint16 pid, TsMuxStreamType stream_type)
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break;
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break;
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}
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}
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stream->last_pts = -1;
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stream->last_pts = GST_CLOCK_STIME_NONE;
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stream->last_dts = -1;
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stream->last_dts = GST_CLOCK_STIME_NONE;
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stream->pcr_ref = 0;
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stream->pcr_ref = 0;
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stream->last_pcr = -1;
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stream->last_pcr = -1;
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@ -279,10 +279,10 @@ tsmux_stream_consume (TsMuxStream * stream, guint len)
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if (stream->cur_buffer_consumed == 0)
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if (stream->cur_buffer_consumed == 0)
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return;
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return;
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if (stream->cur_buffer->pts != -1) {
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if (GST_CLOCK_STIME_IS_VALID (stream->cur_buffer->pts)) {
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stream->last_pts = stream->cur_buffer->pts;
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stream->last_pts = stream->cur_buffer->pts;
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stream->last_dts = stream->cur_buffer->dts;
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stream->last_dts = stream->cur_buffer->dts;
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} else if (stream->cur_buffer->dts != -1)
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} else if (GST_CLOCK_STIME_IS_VALID (stream->cur_buffer->dts))
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stream->last_dts = stream->cur_buffer->dts;
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stream->last_dts = stream->cur_buffer->dts;
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if (stream->cur_buffer_consumed == stream->cur_buffer->size) {
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if (stream->cur_buffer_consumed == stream->cur_buffer->size) {
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@ -407,10 +407,12 @@ tsmux_stream_initialize_pes_packet (TsMuxStream * stream)
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stream->pi.flags &= ~(TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS |
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stream->pi.flags &= ~(TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS |
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TSMUX_PACKET_FLAG_PES_WRITE_PTS);
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TSMUX_PACKET_FLAG_PES_WRITE_PTS);
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if (stream->pts != -1 && stream->dts != -1 && stream->pts != stream->dts)
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if (GST_CLOCK_STIME_IS_VALID (stream->pts)
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&& GST_CLOCK_STIME_IS_VALID (stream->dts)
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&& stream->pts != stream->dts)
|
||||||
stream->pi.flags |= TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS;
|
stream->pi.flags |= TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS;
|
||||||
else {
|
else {
|
||||||
if (stream->pts != -1)
|
if (GST_CLOCK_STIME_IS_VALID (stream->pts))
|
||||||
stream->pi.flags |= TSMUX_PACKET_FLAG_PES_WRITE_PTS;
|
stream->pi.flags |= TSMUX_PACKET_FLAG_PES_WRITE_PTS;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -546,8 +548,8 @@ tsmux_stream_find_pts_dts_within (TsMuxStream * stream, guint bound,
|
||||||
{
|
{
|
||||||
GList *cur;
|
GList *cur;
|
||||||
|
|
||||||
*pts = -1;
|
*pts = GST_CLOCK_STIME_NONE;
|
||||||
*dts = -1;
|
*dts = GST_CLOCK_STIME_NONE;
|
||||||
|
|
||||||
for (cur = stream->buffers; cur; cur = cur->next) {
|
for (cur = stream->buffers; cur; cur = cur->next) {
|
||||||
TsMuxStreamBuffer *curbuf = cur->data;
|
TsMuxStreamBuffer *curbuf = cur->data;
|
||||||
|
@ -562,7 +564,8 @@ tsmux_stream_find_pts_dts_within (TsMuxStream * stream, guint bound,
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Have we found a buffer with pts/dts set? */
|
/* Have we found a buffer with pts/dts set? */
|
||||||
if (curbuf->pts != -1 || curbuf->dts != -1) {
|
if (GST_CLOCK_STIME_IS_VALID (curbuf->pts)
|
||||||
|
|| GST_CLOCK_STIME_IS_VALID (curbuf->dts)) {
|
||||||
*pts = curbuf->pts;
|
*pts = curbuf->pts;
|
||||||
*dts = curbuf->dts;
|
*dts = curbuf->dts;
|
||||||
return;
|
return;
|
||||||
|
@ -656,7 +659,7 @@ tsmux_stream_write_pes_header (TsMuxStream * stream, guint8 * data)
|
||||||
*
|
*
|
||||||
* Submit @len bytes of @data into @stream. @pts and @dts can be set to the
|
* Submit @len bytes of @data into @stream. @pts and @dts can be set to the
|
||||||
* timestamp (against a 90Hz clock) of the first access unit in @data. A
|
* timestamp (against a 90Hz clock) of the first access unit in @data. A
|
||||||
* timestamp of -1 for @pts or @dts means unknown.
|
* timestamp of GST_CLOCK_STIME_NNOE for @pts or @dts means unknown.
|
||||||
*
|
*
|
||||||
* @user_data will be passed to the release function as set with
|
* @user_data will be passed to the release function as set with
|
||||||
* tsmux_stream_set_buffer_release_func() when @data can be freed.
|
* tsmux_stream_set_buffer_release_func() when @data can be freed.
|
||||||
|
@ -957,7 +960,7 @@ tsmux_stream_is_pcr (TsMuxStream * stream)
|
||||||
guint64
|
guint64
|
||||||
tsmux_stream_get_pts (TsMuxStream * stream)
|
tsmux_stream_get_pts (TsMuxStream * stream)
|
||||||
{
|
{
|
||||||
g_return_val_if_fail (stream != NULL, -1);
|
g_return_val_if_fail (stream != NULL, GST_CLOCK_STIME_NONE);
|
||||||
|
|
||||||
return stream->last_pts;
|
return stream->last_pts;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue