*
* SPDX-License-Identifier: MPL-1.1 OR MIT OR LGPL-2.0-or-later
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include <stdio.h>
#include <string.h>
#define CLOCK_BASE 9LL
#define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */
#define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */
+#define TS_MUX_CLOCK_BASE (TSMUX_CLOCK_FREQ * 10 * 360)
#define GSTTIME_TO_MPEGTIME(time) \
(((time) > 0 ? (gint64) 1 : (gint64) -1) * \
if (si_sections)
g_hash_table_unref (si_sections);
+ mux->last_scte35_event_seqnum = GST_SEQNUM_INVALID;
+
if (klass->reset)
klass->reset (mux);
}
}
static GstFlowReturn
-gst_base_ts_mux_create_stream (GstBaseTsMux * mux, GstBaseTsMuxPad * ts_pad)
+gst_base_ts_mux_create_or_update_stream (GstBaseTsMux * mux,
+ GstBaseTsMuxPad * ts_pad, GstCaps * caps)
{
- GstFlowReturn ret = GST_FLOW_ERROR;
- GstCaps *caps;
GstStructure *s;
- GstPad *pad;
guint st = TSMUX_ST_RESERVED;
const gchar *mt;
const GValue *value = NULL;
guint8 main_level = 0;
guint32 max_rate = 0;
guint8 color_spec = 0;
- j2k_private_data *private_data = NULL;
const gchar *stream_format = NULL;
+ const char *interlace_mode = NULL;
- pad = GST_PAD (ts_pad);
- caps = gst_pad_get_current_caps (pad);
- if (caps == NULL)
- goto not_negotiated;
-
- GST_DEBUG_OBJECT (pad, "Creating stream with PID 0x%04x for caps %"
- GST_PTR_FORMAT, ts_pad->pid, caps);
+ GST_DEBUG_OBJECT (ts_pad,
+ "%s stream with PID 0x%04x for caps %" GST_PTR_FORMAT,
+ ts_pad->stream ? "Recreating" : "Creating", ts_pad->pid, caps);
s = gst_caps_get_structure (caps, 0);
if (value != NULL)
codec_data = gst_value_get_buffer (value);
+ g_clear_pointer (&ts_pad->codec_data, gst_buffer_unref);
+ ts_pad->prepare_func = NULL;
+
stream_format = gst_structure_get_string (s, "stream-format");
if (strcmp (mt, "video/x-dirac") == 0) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
- GST_ERROR_OBJECT (pad, "caps missing mpegversion");
+ GST_ERROR_OBJECT (ts_pad, "caps missing mpegversion");
goto not_negotiated;
}
/* Check the stream format. We need codec_data with RAW streams and mpegversion=4 */
if (g_strcmp0 (stream_format, "raw") == 0) {
if (codec_data) {
- GST_DEBUG_OBJECT (pad,
+ GST_DEBUG_OBJECT (ts_pad,
"we have additional codec data (%" G_GSIZE_FORMAT " bytes)",
gst_buffer_get_size (codec_data));
ts_pad->codec_data = gst_buffer_ref (codec_data);
GST_ERROR_OBJECT (mux, "Need codec_data for raw MPEG-4 AAC");
goto not_negotiated;
}
+ } else if (codec_data) {
+ ts_pad->codec_data = gst_buffer_ref (codec_data);
+ } else {
+ ts_pad->codec_data = NULL;
}
break;
}
default:
- GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion);
+ GST_WARNING_OBJECT (ts_pad, "unsupported mpegversion %d", mpegversion);
goto not_negotiated;
}
} else if (strcmp (mt, "video/mpeg") == 0) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
- GST_ERROR_OBJECT (pad, "caps missing mpegversion");
+ GST_ERROR_OBJECT (ts_pad, "caps missing mpegversion");
goto not_negotiated;
}
st = TSMUX_ST_VIDEO_MPEG4;
break;
default:
- GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion);
+ GST_WARNING_OBJECT (ts_pad, "unsupported mpegversion %d", mpegversion);
goto not_negotiated;
}
} else if (strcmp (mt, "subpicture/x-dvb") == 0) {
if (!gst_codec_utils_opus_parse_caps (caps, NULL, &channels,
&mapping_family, &stream_count, &coupled_count, channel_mapping)) {
- GST_ERROR_OBJECT (pad, "Incomplete Opus caps");
+ GST_ERROR_OBJECT (ts_pad, "Incomplete Opus caps");
goto not_negotiated;
}
channels) == 0) {
opus_channel_config_code = channels | 0x80;
} else {
- GST_FIXME_OBJECT (pad, "Opus channel mapping not handled");
+ GST_FIXME_OBJECT (ts_pad, "Opus channel mapping not handled");
goto not_negotiated;
}
}
const GValue *vMainlevel = gst_structure_get_value (s, "main-level");
const GValue *vFramerate = gst_structure_get_value (s, "framerate");
const GValue *vColorimetry = gst_structure_get_value (s, "colorimetry");
- private_data = g_new0 (j2k_private_data, 1);
+ j2k_private_data *private_data;
+
/* for now, we relax the condition that profile must exist and equal
* GST_JPEG2000_PARSE_PROFILE_BC_SINGLE */
if (vProfile) {
profile = g_value_get_int (vProfile);
if (profile != GST_JPEG2000_PARSE_PROFILE_BC_SINGLE) {
- GST_LOG_OBJECT (pad, "Invalid JPEG 2000 profile %d", profile);
- /*goto not_negotiated; */
+ GST_LOG_OBJECT (ts_pad, "Invalid JPEG 2000 profile %d", profile);
+ /* goto not_negotiated; */
}
}
/* for now, we will relax the condition that the main level must be present */
if (vMainlevel) {
main_level = g_value_get_uint (vMainlevel);
if (main_level > 11) {
- GST_ERROR_OBJECT (pad, "Invalid main level %d", main_level);
+ GST_ERROR_OBJECT (ts_pad, "Invalid main level %d", main_level);
goto not_negotiated;
}
if (main_level >= 6) {
}
}
} else {
- /*GST_ERROR_OBJECT (pad, "Missing main level");
- goto not_negotiated; */
+ /* GST_ERROR_OBJECT (ts_pad, "Missing main level");
+ * goto not_negotiated; */
}
+
/* We always mux video in J2K-over-MPEG-TS non-interlaced mode */
+ private_data = g_new0 (j2k_private_data, 1);
private_data->interlace = FALSE;
private_data->den = 0;
private_data->num = 0;
}
private_data->color_spec = color_spec;
} else {
- GST_ERROR_OBJECT (pad, "Colorimetry not present in caps");
+ GST_ERROR_OBJECT (ts_pad, "Colorimetry not present in caps");
+ g_free (private_data);
goto not_negotiated;
}
st = TSMUX_ST_VIDEO_JP2K;
}
}
+ if (st == TSMUX_ST_RESERVED) {
+ GST_ERROR_OBJECT (ts_pad, "Failed to determine stream type");
+ goto error;
+ }
+
+ if (ts_pad->stream && st != ts_pad->stream->stream_type) {
+ GST_ELEMENT_ERROR (mux, STREAM, MUX,
+ ("Stream type change from %02x to %02x not supported",
+ ts_pad->stream->stream_type, st), NULL);
+ goto error;
+ }
- if (st != TSMUX_ST_RESERVED) {
- ts_pad->stream = tsmux_create_stream (mux->tsmux, st, ts_pad->pid,
- ts_pad->language);
- } else {
- GST_DEBUG_OBJECT (pad, "Failed to determine stream type");
+ if (ts_pad->stream == NULL) {
+ ts_pad->stream =
+ tsmux_create_stream (mux->tsmux, st, ts_pad->pid, ts_pad->language);
+ if (ts_pad->stream == NULL)
+ goto error;
}
- if (ts_pad->stream != NULL) {
- const char *interlace_mode = gst_structure_get_string (s, "interlace-mode");
- gst_structure_get_int (s, "rate", &ts_pad->stream->audio_sampling);
- gst_structure_get_int (s, "channels", &ts_pad->stream->audio_channels);
- gst_structure_get_int (s, "bitrate", &ts_pad->stream->audio_bitrate);
+ interlace_mode = gst_structure_get_string (s, "interlace-mode");
+ gst_structure_get_int (s, "rate", &ts_pad->stream->audio_sampling);
+ gst_structure_get_int (s, "channels", &ts_pad->stream->audio_channels);
+ gst_structure_get_int (s, "bitrate", &ts_pad->stream->audio_bitrate);
- /* frame rate */
- gst_structure_get_fraction (s, "framerate", &ts_pad->stream->num,
- &ts_pad->stream->den);
+ /* frame rate */
+ gst_structure_get_fraction (s, "framerate", &ts_pad->stream->num,
+ &ts_pad->stream->den);
- /* Interlace mode */
- ts_pad->stream->interlace_mode = FALSE;
- if (interlace_mode) {
- ts_pad->stream->interlace_mode =
- g_str_equal (interlace_mode, "interleaved");
- }
- /* Width and Height */
- gst_structure_get_int (s, "width", &ts_pad->stream->horizontal_size);
- gst_structure_get_int (s, "height", &ts_pad->stream->vertical_size);
+ /* Interlace mode */
+ ts_pad->stream->interlace_mode = FALSE;
+ if (interlace_mode) {
+ ts_pad->stream->interlace_mode =
+ g_str_equal (interlace_mode, "interleaved");
+ }
- ts_pad->stream->color_spec = color_spec;
- ts_pad->stream->max_bitrate = max_rate;
- ts_pad->stream->profile_and_level = profile | main_level;
+ /* Width and Height */
+ gst_structure_get_int (s, "width", &ts_pad->stream->horizontal_size);
+ gst_structure_get_int (s, "height", &ts_pad->stream->vertical_size);
- ts_pad->stream->opus_channel_config_code = opus_channel_config_code;
+ ts_pad->stream->color_spec = color_spec;
+ ts_pad->stream->max_bitrate = max_rate;
+ ts_pad->stream->profile_and_level = profile | main_level;
- tsmux_stream_set_buffer_release_func (ts_pad->stream, release_buffer_cb);
- tsmux_program_add_stream (ts_pad->prog, ts_pad->stream);
+ ts_pad->stream->opus_channel_config_code = opus_channel_config_code;
+
+ tsmux_stream_set_buffer_release_func (ts_pad->stream, release_buffer_cb);
+
+ return GST_FLOW_OK;
- ret = GST_FLOW_OK;
- }
- gst_caps_unref (caps);
- return ret;
/* ERRORS */
not_negotiated:
- {
- g_free (private_data);
- GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing");
- if (caps)
- gst_caps_unref (caps);
- return GST_FLOW_NOT_NEGOTIATED;
- }
+ return GST_FLOW_NOT_NEGOTIATED;
+
+error:
+ return GST_FLOW_ERROR;
}
static gboolean
}
static GstFlowReturn
+gst_base_ts_mux_create_stream (GstBaseTsMux * mux, GstBaseTsMuxPad * ts_pad)
+{
+ GstCaps *caps = gst_pad_get_current_caps (GST_PAD (ts_pad));
+ GstFlowReturn ret;
+
+ if (caps == NULL) {
+ GST_DEBUG_OBJECT (ts_pad, "Sink pad caps were not set before pushing");
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+
+ ret = gst_base_ts_mux_create_or_update_stream (mux, ts_pad, caps);
+ gst_caps_unref (caps);
+
+ if (ret == GST_FLOW_OK) {
+ tsmux_program_add_stream (ts_pad->prog, ts_pad->stream);
+ }
+
+ return ret;
+}
+
+static GstFlowReturn
gst_base_ts_mux_create_pad_stream (GstBaseTsMux * mux, GstPad * pad)
{
GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (pad);
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf));
GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %"
- G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts);
+ G_GINT64_FORMAT "%s", GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts,
+ !GST_BUFFER_FLAG_IS_SET (buf,
+ GST_BUFFER_FLAG_DELTA_UNIT) ? " (keyframe)" : "");
}
if (GST_CLOCK_STIME_IS_VALID (best->dts)) {
GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad);
}
+/* GstAggregator implementation */
+
+static void
+request_keyframe (GstBaseTsMux * mux, GstClockTime running_time)
+{
+ GList *l;
+ GST_OBJECT_LOCK (mux);
+
+ for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
+ gst_pad_push_event (GST_PAD (l->data),
+ gst_video_event_new_upstream_force_key_unit (running_time, TRUE, 0));
+ }
+
+ GST_OBJECT_UNLOCK (mux);
+}
+
+static const guint32 crc_tab[256] = {
+ 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
+ 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
+ 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
+ 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
+ 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
+ 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+ 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
+ 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
+ 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
+ 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
+ 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
+ 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
+ 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
+ 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
+ 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
+ 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+ 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
+ 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
+ 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
+ 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
+ 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
+ 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
+ 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
+ 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
+ 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
+ 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+ 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
+ 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
+ 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
+ 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
+ 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
+ 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
+ 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
+ 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
+ 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
+ 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+ 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
+ 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
+ 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
+ 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
+ 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
+ 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
+ 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
+};
+
+static guint32
+_calc_crc32 (const guint8 * data, guint datalen)
+{
+ gint i;
+ guint32 crc = 0xffffffff;
+
+ for (i = 0; i < datalen; i++) {
+ crc = (crc << 8) ^ crc_tab[((crc >> 24) ^ *data++) & 0xff];
+ }
+ return crc;
+}
+
+#define MPEGTIME_TO_GSTTIME(t) ((t) * (guint64)100000 / 9)
+
+static GstMpegtsSCTESpliceEvent *
+copy_splice (GstMpegtsSCTESpliceEvent * splice)
+{
+ return g_boxed_copy (GST_TYPE_MPEGTS_SCTE_SPLICE_EVENT, splice);
+}
+
+static void
+free_splice (GstMpegtsSCTESpliceEvent * splice)
+{
+ g_boxed_free (GST_TYPE_MPEGTS_SCTE_SPLICE_EVENT, splice);
+}
+
+/* FIXME: get rid of this when depending on glib >= 2.62 */
+
+static GPtrArray *
+_g_ptr_array_copy (GPtrArray * array,
+ GCopyFunc func, GFreeFunc free_func, gpointer user_data)
+{
+ GPtrArray *new_array;
+
+ g_return_val_if_fail (array != NULL, NULL);
+
+ new_array = g_ptr_array_new_with_free_func (free_func);
+
+ g_ptr_array_set_size (new_array, array->len);
+
+ if (func != NULL) {
+ guint i;
+
+ for (i = 0; i < array->len; i++)
+ new_array->pdata[i] = func (array->pdata[i], user_data);
+ } else if (array->len > 0) {
+ memcpy (new_array->pdata, array->pdata,
+ array->len * sizeof (*array->pdata));
+ }
+
+ new_array->len = array->len;
+
+ return new_array;
+}
+
+static GstMpegtsSCTESIT *
+deep_copy_sit (const GstMpegtsSCTESIT * sit)
+{
+ GstMpegtsSCTESIT *sit_copy = g_boxed_copy (GST_TYPE_MPEGTS_SCTE_SIT, sit);
+ GPtrArray *splices_copy =
+ _g_ptr_array_copy (sit_copy->splices, (GCopyFunc) copy_splice,
+ (GFreeFunc) free_splice, NULL);
+
+ g_ptr_array_unref (sit_copy->splices);
+ sit_copy->splices = splices_copy;
+
+ return sit_copy;
+}
+
+/* Takes ownership of @section.
+ *
+ * This function is a bit complex because the SCTE sections can
+ * have various origins:
+ *
+ * * Sections created by the application with the gst_mpegts_scte_*_new()
+ * API. The splice times / durations contained by these are expressed
+ * in the GStreamer running time domain, and must be translated to
+ * our local PES time domain. In this case, we will packetize the section
+ * ourselves.
+ *
+ * * Sections passed through from tsdemux: this case is complicated as
+ * splice times in the incoming stream may be encrypted, with pts_adjustment
+ * being the only timing field guaranteed *not* to be encrypted. In this
+ * case, the original binary data (section->data) will be reinjected as is
+ * in the output stream, with pts_adjustment adjusted. tsdemux provides us
+ * with the pts_offset it introduces, the difference between the original
+ * PES PTSs and the running times it outputs.
+ *
+ * Additionally, in either of these cases when the splice times aren't encrypted
+ * we want to make use of those to request keyframes. For the passthrough case,
+ * as the splice times are left untouched tsdemux provides us with the running
+ * times the section originally referred to. We cannot calculate it locally
+ * because we would need to have access to the information that the timestamps
+ * in the original PES domain have wrapped around, and how many times they have
+ * done so. While we could probably make educated guesses, tsdemux (more specifically
+ * mpegtspacketizer) already keeps track of that, and it seemed more logical to
+ * perform the calculation there and forward it alongside the downstream events.
+ *
+ * Finally, while we can't request keyframes at splice points in the encrypted
+ * case, if the input stream was compliant in that regard and no reencoding took
+ * place the splice times will still match with valid splice points, it is up
+ * to the application to ensure that that is the case.
+ */
+static void
+handle_scte35_section (GstBaseTsMux * mux, GstEvent * event,
+ GstMpegtsSection * section, guint64 mpeg_pts_offset,
+ GstStructure * rtime_map)
+{
+ GstMpegtsSCTESIT *sit;
+ guint i;
+ gboolean forward = TRUE;
+ guint64 pts_adjust;
+ guint8 *section_data;
+ guint8 *crc;
+ gboolean translate = FALSE;
+
+ sit = (GstMpegtsSCTESIT *) gst_mpegts_section_get_scte_sit (section);
+
+ /* When the application injects manually constructed splice events,
+ * their time domain is the GStreamer running time, we receive them
+ * unpacketized and translate the fields in the SIT to local PTS.
+ *
+ * We make a copy of the SIT in order to make sure we can rewrite it.
+ */
+ if (sit->is_running_time) {
+ sit = deep_copy_sit (sit);
+ translate = TRUE;
+ }
+
+ switch (sit->splice_command_type) {
+ case GST_MTS_SCTE_SPLICE_COMMAND_NULL:
+ /* We implement heartbeating ourselves */
+ forward = FALSE;
+ break;
+ case GST_MTS_SCTE_SPLICE_COMMAND_SCHEDULE:
+ /* No need to request keyframes at this point, splice_insert
+ * messages will precede the future splice points and we
+ * can request keyframes then. Only translate if needed.
+ */
+ if (translate) {
+ for (i = 0; i < sit->splices->len; i++) {
+ GstMpegtsSCTESpliceEvent *sevent =
+ g_ptr_array_index (sit->splices, i);
+
+ if (sevent->program_splice_time_specified)
+ sevent->program_splice_time =
+ GSTTIME_TO_MPEGTIME (sevent->program_splice_time) +
+ TS_MUX_CLOCK_BASE;
+
+ if (sevent->duration_flag)
+ sevent->break_duration =
+ GSTTIME_TO_MPEGTIME (sevent->break_duration);
+ }
+ }
+ break;
+ case GST_MTS_SCTE_SPLICE_COMMAND_INSERT:
+ /* We want keyframes at splice points */
+ if (sit->fully_parsed && (rtime_map || translate)) {
+
+ for (i = 0; i < sit->splices->len; i++) {
+ guint64 running_time = GST_CLOCK_TIME_NONE;
+
+ GstMpegtsSCTESpliceEvent *sevent =
+ g_ptr_array_index (sit->splices, i);
+ if (sevent->program_splice_time_specified) {
+ if (rtime_map) {
+ gchar *field_name = g_strdup_printf ("event-%u-splice-time",
+ sevent->splice_event_id);
+ if (gst_structure_get_uint64 (rtime_map, field_name,
+ &running_time)) {
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for splice point at %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (running_time));
+ request_keyframe (mux, running_time);
+ }
+ g_free (field_name);
+ } else {
+ g_assert (translate == TRUE);
+ running_time = sevent->program_splice_time;
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for splice point at %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (running_time));
+ request_keyframe (mux, running_time);
+ sevent->program_splice_time =
+ GSTTIME_TO_MPEGTIME (running_time) + TS_MUX_CLOCK_BASE;
+ }
+ } else {
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for immediate splice point");
+ request_keyframe (mux, GST_CLOCK_TIME_NONE);
+ }
+
+ if (sevent->duration_flag) {
+ if (translate) {
+ sevent->break_duration =
+ GSTTIME_TO_MPEGTIME (sevent->break_duration);
+ }
+
+ /* Even if auto_return is FALSE, when a break_duration is specified it
+ * is intended as a redundancy mechanism in case the follow-up
+ * splice insert goes missing.
+ *
+ * Schedule a keyframe at that point (if we can calculate its position
+ * accurately).
+ */
+ if (GST_CLOCK_TIME_IS_VALID (running_time)) {
+ running_time += MPEGTIME_TO_GSTTIME (sevent->break_duration);
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for end of break at %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (running_time));
+ request_keyframe (mux, running_time);
+ }
+ }
+ }
+ }
+ break;
+ case GST_MTS_SCTE_SPLICE_COMMAND_TIME:{
+ /* Adjust timestamps and potentially request keyframes */
+ gboolean do_request_keyframes = FALSE;
+
+ /* TODO: we can probably be a little more fine-tuned about determining
+ * whether a keyframe is actually needed, but this at least takes care
+ * of the requirement in 10.3.4 that a keyframe should not be created
+ * when the signal contains only a time_descriptor.
+ */
+ if (sit->fully_parsed && (rtime_map || translate)) {
+ for (i = 0; i < sit->descriptors->len; i++) {
+ GstMpegtsDescriptor *descriptor =
+ g_ptr_array_index (sit->descriptors, i);
+
+ switch (descriptor->tag) {
+ case GST_MTS_SCTE_DESC_AVAIL:
+ case GST_MTS_SCTE_DESC_DTMF:
+ case GST_MTS_SCTE_DESC_SEGMENTATION:
+ do_request_keyframes = TRUE;
+ break;
+ case GST_MTS_SCTE_DESC_TIME:
+ case GST_MTS_SCTE_DESC_AUDIO:
+ break;
+ }
+
+ if (do_request_keyframes)
+ break;
+ }
+
+ if (sit->splice_time_specified) {
+ GstClockTime running_time = GST_CLOCK_TIME_NONE;
+
+ if (rtime_map) {
+ if (do_request_keyframes
+ && gst_structure_get_uint64 (rtime_map, "splice-time",
+ &running_time)) {
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for time signal at %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (running_time));
+ request_keyframe (mux, running_time);
+ }
+ } else {
+ g_assert (translate);
+ running_time = sit->splice_time;
+ sit->splice_time =
+ GSTTIME_TO_MPEGTIME (running_time) + TS_MUX_CLOCK_BASE;
+ if (do_request_keyframes) {
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for time signal at %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (running_time));
+ request_keyframe (mux, running_time);
+ }
+ }
+ } else if (do_request_keyframes) {
+ GST_DEBUG_OBJECT (mux,
+ "Requesting keyframe for immediate time signal");
+ request_keyframe (mux, GST_CLOCK_TIME_NONE);
+ }
+ }
+ break;
+ }
+ case GST_MTS_SCTE_SPLICE_COMMAND_BANDWIDTH:
+ case GST_MTS_SCTE_SPLICE_COMMAND_PRIVATE:
+ /* Just let those go through untouched, none of our business */
+ break;
+ default:
+ break;
+ }
+
+ if (!forward) {
+ gst_mpegts_section_unref (section);
+ return;
+ }
+
+ if (!translate) {
+ g_assert (section->data);
+ /* Calculate the final adjustment, as a sum of:
+ * - The adjustment in the original packet
+ * - The offset introduced between the original local PTS
+ * and the GStreamer PTS output by tsdemux
+ * - Our own 1-hour offset
+ */
+ pts_adjust = sit->pts_adjustment + mpeg_pts_offset + TS_MUX_CLOCK_BASE;
+
+ /* Account for offsets potentially introduced between the demuxer and us */
+ pts_adjust +=
+ GSTTIME_TO_MPEGTIME (gst_event_get_running_time_offset (event));
+
+ pts_adjust &= 0x1ffffffff;
+ section_data = g_memdup2 (section->data, section->section_length);
+ section_data[4] |= pts_adjust >> 32;
+ section_data[5] = pts_adjust >> 24;
+ section_data[6] = pts_adjust >> 16;
+ section_data[7] = pts_adjust >> 8;
+ section_data[8] = pts_adjust;
+
+ /* Now rewrite our checksum */
+ crc = section_data + section->section_length - 4;
+ GST_WRITE_UINT32_BE (crc, _calc_crc32 (section_data, crc - section_data));
+
+ GST_OBJECT_LOCK (mux);
+ GST_DEBUG_OBJECT (mux, "Storing SCTE section");
+ if (mux->pending_scte35_section)
+ gst_mpegts_section_unref (mux->pending_scte35_section);
+ mux->pending_scte35_section =
+ gst_mpegts_section_new (mux->scte35_pid, section_data,
+ section->section_length);
+ GST_OBJECT_UNLOCK (mux);
+
+ gst_mpegts_section_unref (section);
+ } else {
+ GST_OBJECT_LOCK (mux);
+ GST_DEBUG_OBJECT (mux, "Storing SCTE section");
+ gst_mpegts_section_unref (section);
+ if (mux->pending_scte35_section)
+ gst_mpegts_section_unref (mux->pending_scte35_section);
+ mux->pending_scte35_section =
+ gst_mpegts_section_from_scte_sit (sit, mux->scte35_pid);;
+ GST_OBJECT_UNLOCK (mux);
+ }
+}
+
static gboolean
gst_base_ts_mux_send_event (GstElement * element, GstEvent * event)
{
GST_DEBUG ("Received event with mpegts section");
if (section->section_type == GST_MPEGTS_SECTION_SCTE_SIT) {
- /* Will be sent from the streaming threads */
- GST_DEBUG_OBJECT (mux, "Storing SCTE event");
- GST_OBJECT_LOCK (element);
- if (mux->pending_scte35_section)
- gst_mpegts_section_unref (mux->pending_scte35_section);
- mux->pending_scte35_section = section;
- GST_OBJECT_UNLOCK (element);
+ handle_scte35_section (mux, event, section, 0, NULL);
} else {
/* TODO: Check that the section type is supported */
tsmux_add_mpegts_si_section (mux->tsmux, section);
gboolean forward = TRUE;
switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+ GstFlowReturn ret;
+ GList *cur;
+
+ if (ts_pad->stream == NULL)
+ break;
+
+ forward = FALSE;
+
+ gst_event_parse_caps (event, &caps);
+ if (!caps || !gst_caps_is_fixed (caps))
+ break;
+
+ ret = gst_base_ts_mux_create_or_update_stream (mux, ts_pad, caps);
+ if (ret != GST_FLOW_OK)
+ break;
+
+ mux->tsmux->pat_changed = TRUE;
+ mux->tsmux->si_changed = TRUE;
+ tsmux_resend_pat (mux->tsmux);
+ tsmux_resend_si (mux->tsmux);
+
+ /* output PMT for each program */
+ for (cur = mux->tsmux->programs; cur; cur = cur->next) {
+ TsMuxProgram *program = (TsMuxProgram *) cur->data;
+
+ program->pmt_changed = TRUE;
+ tsmux_resend_pmt (program);
+ }
+
+ res = TRUE;
+ break;
+ }
case GST_EVENT_CUSTOM_DOWNSTREAM:
{
GstClockTime timestamp, stream_time, running_time;
gboolean all_headers;
guint count;
+ const GstStructure *s;
+
+ s = gst_event_get_structure (event);
+
+ if (gst_structure_has_name (s, "scte-sit") && mux->scte35_pid != 0) {
+
+ /* When operating downstream of tsdemux, tsdemux will send out events
+ * on all its source pads for each splice table it encounters. If we
+ * are remuxing multiple streams it has demuxed, this means we could
+ * unnecessarily repeat the same table multiple times, we avoid that
+ * by deduplicating thanks to the event sequm
+ */
+ if (gst_event_get_seqnum (event) != mux->last_scte35_event_seqnum) {
+ GstMpegtsSection *section;
+
+ gst_structure_get (s, "section", GST_TYPE_MPEGTS_SECTION, §ion,
+ NULL);
+ if (section) {
+ guint64 mpeg_pts_offset = 0;
+ GstStructure *rtime_map = NULL;
+
+ gst_structure_get (s, "running-time-map", GST_TYPE_STRUCTURE,
+ &rtime_map, NULL);
+ gst_structure_get_uint64 (s, "mpeg-pts-offset", &mpeg_pts_offset);
+
+ handle_scte35_section (mux, event, section, mpeg_pts_offset,
+ rtime_map);
+ if (rtime_map)
+ gst_structure_free (rtime_map);
+ mux->last_scte35_event_seqnum = gst_event_get_seqnum (event);
+ } else {
+ GST_WARNING_OBJECT (ts_pad,
+ "Ignoring scte-sit event without a section");
+ }
+ } else {
+ GST_DEBUG_OBJECT (ts_pad, "Ignoring duplicate scte-sit event");
+ }
+ res = TRUE;
+ forward = FALSE;
+ goto out;
+ }
if (!gst_video_event_is_force_key_unit (event))
goto out;
GstBuffer *buffer;
buffer = gst_aggregator_pad_pop_buffer (GST_AGGREGATOR_PAD (best));
+ if (!buffer) {
+ /* We might have gotten a flush event after we picked the pad */
+ goto done;
+ }
ret =
gst_base_ts_mux_aggregate_buffer (GST_BASE_TS_MUX (agg),
projects / platform / upstream / gstreamer.git / blobdiff