[FFmpeg-cvslog] r14765 - trunk/libavformat/mxfenc.c
bcoudurier
subversion
Thu Aug 14 23:48:03 CEST 2008
Author: bcoudurier
Date: Thu Aug 14 23:48:02 2008
New Revision: 14765
Log:
import ok'd hunks for mxf muxer
Added:
trunk/libavformat/mxfenc.c
Added: trunk/libavformat/mxfenc.c
==============================================================================
--- (empty file)
+++ trunk/libavformat/mxfenc.c Thu Aug 14 23:48:02 2008
@@ -0,0 +1,101 @@
+/*
+ * MXF muxer
+ * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * References
+ * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
+ * SMPTE 377M MXF File Format Specifications
+ * SMPTE 379M MXF Generic Container
+ * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
+ * SMPTE RP210: SMPTE Metadata Dictionary
+ * SMPTE RP224: Registry of SMPTE Universal Labels
+ */
+
+//#define DEBUG
+
+static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
+{
+ const MXFCodecUL *uls = mxf_essence_container_uls;
+ while (uls->id != CODEC_ID_NONE) {
+ if (uls->id == type)
+ break;
+ uls++;
+ }
+ return uls;
+}
+
+static void mxf_free(AVFormatContext *s)
+{
+ MXFContext *mxf = s->priv_data;
+ AVStream *st;
+ int i;
+
+ av_freep(&mxf->reference.identification);
+ av_freep(mxf->reference.package);
+ av_freep(&mxf->reference.package);
+ av_freep(&mxf->reference.content_storage);
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ av_freep(&st->priv_data);
+ }
+ av_freep(mxf->reference.sub_desc);
+ av_freep(&mxf->reference.sub_desc);
+ av_freep(&mxf->reference.mul_desc);
+ av_freep(&mxf->essence_container_uls);
+}
+
+static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
+{
+ const MXFDataDefinitionUL *uls = mxf_data_definition_uls;
+ while (uls->type != CODEC_TYPE_DATA) {
+ if (type == uls->type)
+ break;
+ uls ++;
+ }
+ return uls;
+}
+
+static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ ByteIOContext *pb = s->pb;
+ AVStream *st = s->streams[pkt->stream_index];
+ MXFStreamContext *sc = st->priv_data;
+
+ put_buffer(pb, sc->track_essence_element_key, 16); // write key
+ klv_encode_ber_length(pb, pkt->size); // write length
+ put_buffer(pb, pkt->data, pkt->size); // write value
+
+ put_flush_packet(pb);
+ return 0;
+}
+
+AVOutputFormat mxf_muxer = {
+ "mxf",
+ NULL_IF_CONFIG_SMALL("Material eXchange Format"),
+ NULL,
+ "mxf",
+ sizeof(MXFContext),
+ CODEC_ID_PCM_S16LE,
+ CODEC_ID_MPEG2VIDEO,
+ mux_write_header,
+ mux_write_packet,
+ mux_write_footer,
+};
More information about the ffmpeg-cvslog
mailing list