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mpegtsmux: optionally use fixed-size PES header

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This commit is contained in:
Mark Nauwelaerts 2012-06-16 16:50:39 +02:00
parent f49e74aa34
commit 898f6b48be
2 changed files with 11 additions and 0 deletions
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1
gst/mpegtsmux/tsmux/tsmuxcommon.h
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@ -127,6 +127,7 @@ typedef struct TsMuxStream TsMuxStream;
struct TsMuxPacketInfo { struct TsMuxPacketInfo {
guint16 pid; guint16 pid;
guint32 flags; guint32 flags;
guint32 pes_header_length;
gboolean packet_start_unit_indicator; gboolean packet_start_unit_indicator;

10
gst/mpegtsmux/tsmux/tsmuxstream.c
View File

@ -512,6 +512,11 @@ tsmux_stream_pes_header_length (TsMuxStream * stream)
* length + extended stream id */ * length + extended stream id */
packet_len += 3; packet_len += 3;
} }
if (stream->pi.pes_header_length) {
/* check for consistency, then we can add stuffing */
g_assert (packet_len <= stream->pi.pes_header_length + 6 + 3);
packet_len = stream->pi.pes_header_length + 6 + 3;
}
} }
return packet_len; return packet_len;
@ -556,6 +561,7 @@ tsmux_stream_write_pes_header (TsMuxStream * stream, guint8 * data)
{ {
guint16 length_to_write; guint16 length_to_write;
guint8 hdr_len = tsmux_stream_pes_header_length (stream); guint8 hdr_len = tsmux_stream_pes_header_length (stream);
guint8 *orig_data = data;
/* start_code prefix + stream_id + pes_packet_length = 6 bytes */ /* start_code prefix + stream_id + pes_packet_length = 6 bytes */
data[0] = 0x00; data[0] = 0x00;
@ -615,6 +621,10 @@ tsmux_stream_write_pes_header (TsMuxStream * stream, guint8 * data)
/* Write the extended streamID */ /* Write the extended streamID */
*data++ = stream->id_extended; *data++ = stream->id_extended;
} }
/* write stuffing bytes if fixed PES header length requested */
if (stream->pi.pes_header_length)
while (data < orig_data + stream->pi.pes_header_length + 9)
*data++ = 0xff;
} }
} }