On 6/13/2023 9:23 PM, Michael Niedermayer wrote:
On Mon, Jun 12, 2023 at 02:30:27PM +0200, Dawid Kozinski wrote:
- Changes in mov_write_video_tag function to handle EVC elementary stream
- Provided structure EVCDecoderConfigurationRecord that specifies the decoder
configuration information for ISO/IEC 23094-1 video content
Signed-off-by: Dawid Kozinski <d.kozin...@samsung.com>
---
libavformat/Makefile | 2 +-
libavformat/evc.c | 422 ++++++++++++++++++++++++++++++++++++++++
libavformat/evc.h | 44 +++++
libavformat/isom_tags.c | 2 +
libavformat/movenc.c | 33 ++++
5 files changed, 502 insertions(+), 1 deletion(-)
create mode 100644 libavformat/evc.c
create mode 100644 libavformat/evc.h
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 6e4231fda2..d3503196e3 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -364,7 +364,7 @@ OBJS-$(CONFIG_MOV_DEMUXER) += mov.o
mov_chan.o mov_esds.o \
OBJS-$(CONFIG_MOV_MUXER) += movenc.o av1.o avc.o hevc.o
vpcc.o \
movenchint.o mov_chan.o rtp.o \
movenccenc.o movenc_ttml.o
rawutils.o \
- dovi_isom.o
+ dovi_isom.o evc.o
OBJS-$(CONFIG_MP2_MUXER) += rawenc.o
OBJS-$(CONFIG_MP3_DEMUXER) += mp3dec.o replaygain.o
OBJS-$(CONFIG_MP3_MUXER) += mp3enc.o rawenc.o id3v2enc.o
diff --git a/libavformat/evc.c b/libavformat/evc.c
new file mode 100644
index 0000000000..431cb107e3
--- /dev/null
+++ b/libavformat/evc.c
@@ -0,0 +1,422 @@
+/*
+ * EVC helper functions for muxers
+ * Copyright (c) 2022 Dawid Kozinski <d.kozin...@samsung.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
+ */
[...]
+ nalu_type = ff_evc_get_nalu_type(data, bytes_to_read, pb);
functions shared between libavcodec and libavformat need an av*/avpriv* prefix
otherwise linking will fail with shared libs as ff* isnt exported
It's small enough that it can go in the header instead. That way we save
one unnecessary exported symbol. Same with ff_evc_read_nal_unit_length().
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