/* buffer needs some custom processing, e.g. subtitles */
gboolean need_process;
+ /* buffer needs potentially be split, e.g. CEA608 subtitles */
+ gboolean need_split;
/* current position */
guint32 segment_index;
if (hard) {
qtdemux->segment_seqnum = GST_SEQNUM_INVALID;
- g_ptr_array_remove_range (qtdemux->active_streams,
- 0, qtdemux->active_streams->len);
- g_ptr_array_remove_range (qtdemux->old_streams,
- 0, qtdemux->old_streams->len);
+ g_ptr_array_set_size (qtdemux->active_streams, 0);
+ g_ptr_array_set_size (qtdemux->old_streams, 0);
qtdemux->n_video_streams = 0;
qtdemux->n_audio_streams = 0;
qtdemux->n_sub_streams = 0;
g_ptr_array_add (dest, gst_qtdemux_stream_ref (stream));
}
- g_ptr_array_remove_range (src, 0, len);
+ g_ptr_array_set_size (src, 0);
}
static gboolean
seg_media_start_mov = seg->trak_media_start;
GST_LOG_OBJECT (qtdemux, "keyframe index %u ts %" G_GUINT64_FORMAT
- " seg start %" G_GUINT64_FORMAT " %" GST_TIME_FORMAT "\n",
+ " seg start %" G_GUINT64_FORMAT " %" GST_TIME_FORMAT,
k_index, target_ts, seg_media_start_mov,
GST_TIME_ARGS (seg->media_start));
return ret;
}
+static GstFlowReturn
+gst_qtdemux_split_and_push_buffer (GstQTDemux * qtdemux, QtDemuxStream * stream,
+ GstBuffer * buf)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ if (stream->subtype == FOURCC_clcp
+ && CUR_STREAM (stream)->fourcc == FOURCC_c608 && stream->need_split) {
+ GstMapInfo map;
+ guint n_output_buffers, n_field1 = 0, n_field2 = 0;
+ guint n_triplets, i;
+ guint field1_off = 0, field2_off = 0;
+
+ /* We have to split CEA608 buffers so that each outgoing buffer contains
+ * one byte pair per field according to the framerate of the video track.
+ *
+ * If there is only a single byte pair per field we don't have to do
+ * anything
+ */
+
+ gst_buffer_map (buf, &map, GST_MAP_READ);
+
+ n_triplets = map.size / 3;
+ for (i = 0; i < n_triplets; i++) {
+ if (map.data[3 * i] & 0x80)
+ n_field1++;
+ else
+ n_field2++;
+ }
+
+ g_assert (n_field1 || n_field2);
+
+ /* If there's more than 1 frame we have to split, otherwise we can just
+ * pass through */
+ if (n_field1 > 1 || n_field2 > 1) {
+ n_output_buffers =
+ gst_util_uint64_scale (GST_BUFFER_DURATION (buf),
+ CUR_STREAM (stream)->fps_n, GST_SECOND * CUR_STREAM (stream)->fps_d);
+
+ for (i = 0; i < n_output_buffers; i++) {
+ GstBuffer *outbuf =
+ gst_buffer_new_and_alloc ((n_field1 ? 3 : 0) + (n_field2 ? 3 : 0));
+ GstMapInfo outmap;
+ guint8 *outptr;
+
+ gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
+ outptr = outmap.data;
+
+ if (n_field1) {
+ gboolean found = FALSE;
+
+ while (map.data + field1_off < map.data + map.size) {
+ if (map.data[field1_off] & 0x80) {
+ memcpy (outptr, &map.data[field1_off], 3);
+ field1_off += 3;
+ found = TRUE;
+ break;
+ }
+ field1_off += 3;
+ }
+
+ if (!found) {
+ const guint8 empty[] = { 0x80, 0x80, 0x80 };
+
+ memcpy (outptr, empty, 3);
+ }
+
+ outptr += 3;
+ }
+
+ if (n_field2) {
+ gboolean found = FALSE;
+
+ while (map.data + field2_off < map.data + map.size) {
+ if ((map.data[field2_off] & 0x80) == 0) {
+ memcpy (outptr, &map.data[field2_off], 3);
+ field2_off += 3;
+ found = TRUE;
+ break;
+ }
+ field2_off += 3;
+ }
+
+ if (!found) {
+ const guint8 empty[] = { 0x00, 0x80, 0x80 };
+
+ memcpy (outptr, empty, 3);
+ }
+
+ outptr += 3;
+ }
+
+ gst_buffer_unmap (outbuf, &outmap);
+
+ GST_BUFFER_PTS (outbuf) =
+ GST_BUFFER_PTS (buf) + gst_util_uint64_scale (i,
+ GST_SECOND * CUR_STREAM (stream)->fps_d,
+ CUR_STREAM (stream)->fps_n);
+ GST_BUFFER_DURATION (outbuf) =
+ gst_util_uint64_scale (GST_SECOND, CUR_STREAM (stream)->fps_d,
+ CUR_STREAM (stream)->fps_n);
+ GST_BUFFER_OFFSET (outbuf) = -1;
+ GST_BUFFER_OFFSET_END (outbuf) = -1;
+
+ ret = gst_qtdemux_push_buffer (qtdemux, stream, outbuf);
+
+ if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
+ break;
+ }
+ gst_buffer_unmap (buf, &map);
+ gst_buffer_unref (buf);
+ } else {
+ gst_buffer_unmap (buf, &map);
+ ret = gst_qtdemux_push_buffer (qtdemux, stream, buf);
+ }
+ } else {
+ ret = gst_qtdemux_push_buffer (qtdemux, stream, buf);
+ }
+
+ return ret;
+}
+
/* Sets a buffer's attributes properly and pushes it downstream.
* Also checks for additional actions and custom processing that may
* need to be done first.
}
#endif
- ret = gst_qtdemux_push_buffer (qtdemux, stream, buf);
+ ret = gst_qtdemux_split_and_push_buffer (qtdemux, stream, buf);
exit:
return ret;
GST_TIME_FORMAT, duration, first_duration,
n_samples - 1, GST_TIME_ARGS (avg_duration));
- gst_video_guess_framerate (avg_duration, &CUR_STREAM (stream)->fps_n,
- &CUR_STREAM (stream)->fps_d);
+ fps_available =
+ gst_video_guess_framerate (avg_duration,
+ &CUR_STREAM (stream)->fps_n, &CUR_STREAM (stream)->fps_d);
GST_DEBUG_OBJECT (qtdemux,
"Calculating framerate, timescale %u gave fps_n %d fps_d %d",
fiel = NULL;
/* pick 'the' stsd child */
mp4v = qtdemux_tree_get_child_by_index (stsd, stsd_index);
- if (!stream->protected) {
- if (QTDEMUX_TREE_NODE_FOURCC (mp4v) != fourcc) {
+ // We should skip parsing the stsd for non-protected streams if
+ // the entry doesn't match the fourcc, since they don't change
+ // format. However, for protected streams we can have partial
+ // encryption, where parts of the stream are encrypted and parts
+ // not. For both parts of such streams, we should ensure the
+ // esds overrides are parsed for both from the stsd.
+ if (QTDEMUX_TREE_NODE_FOURCC (mp4v) != fourcc) {
+ if (stream->protected && QTDEMUX_TREE_NODE_FOURCC (mp4v) != FOURCC_encv)
mp4v = NULL;
- }
- } else {
- if (QTDEMUX_TREE_NODE_FOURCC (mp4v) != FOURCC_encv) {
+ else if (!stream->protected)
mp4v = NULL;
- }
}
if (mp4v) {
}
mp4a = qtdemux_tree_get_child_by_index (stsd, stsd_index);
- if (!stream->protected) {
- } else {
- if (QTDEMUX_TREE_NODE_FOURCC (mp4v) != FOURCC_encv) {
- mp4v = NULL;
- }
- }
- if (stream->protected && fourcc == FOURCC_mp4a) {
- if (QTDEMUX_TREE_NODE_FOURCC (mp4a) != FOURCC_enca) {
+ if (QTDEMUX_TREE_NODE_FOURCC (mp4a) != fourcc) {
+ if (stream->protected && QTDEMUX_TREE_NODE_FOURCC (mp4a) != FOURCC_enca)
mp4a = NULL;
- }
- } else {
- if (QTDEMUX_TREE_NODE_FOURCC (mp4a) != FOURCC_mp4a) {
+ else if (!stream->protected)
mp4a = NULL;
- }
}
wave = NULL;
return GST_FLOW_ERROR;
}
- g_ptr_array_remove_range (qtdemux->old_streams,
- 0, qtdemux->old_streams->len);
-
+ g_ptr_array_set_size (qtdemux->old_streams, 0);
qtdemux->need_segment = TRUE;
return GST_FLOW_OK;
}
}
- g_ptr_array_remove_range (qtdemux->old_streams, 0, qtdemux->old_streams->len);
+ g_ptr_array_set_size (qtdemux->old_streams, 0);
/* check if we should post a redirect in case there is a single trak
* and it is a redirecting trak */
gst_caps_new_simple ("closedcaption/x-cea-608", "format",
G_TYPE_STRING, "s334-1a", NULL);
stream->need_process = TRUE;
+ stream->need_split = TRUE;
break;
case FOURCC_c708:
_codec ("CEA 708 Closed Caption");
projects / platform / upstream / gst-plugins-good.git / blobdiff