[FFmpeg-devel] [PATCH v6 1/4] avformat/dovi_isom: Implement Dolby Vision configuration parsing/writing
quietvoid
tcchlisop0 at gmail.com
Wed Sep 29 00:20:53 EEST 2021
According to specification "Dolby Vision Stream
Within the ISO Base Media File Format Version 2.2"
This only adds support for the "Dolby Vision configuration box".
Other configuration boxes, such as
"Dolby Vision enhancement layer configuration box" are not supported.
The new functions will be used to implement parsing/writing
the DOVI config for Matroska, as well as to refactor MOV/MPEG TS
to parse the DOVI box/descriptor using dovi_isom.
Signed-off-by: quietvoid <tcChlisop0 at gmail.com>
---
libavformat/dovi_isom.c | 133 ++++++++++++++++++++++++++++++++++++++++
libavformat/dovi_isom.h | 36 +++++++++++
2 files changed, 169 insertions(+)
create mode 100644 libavformat/dovi_isom.c
create mode 100644 libavformat/dovi_isom.h
diff --git a/libavformat/dovi_isom.c b/libavformat/dovi_isom.c
new file mode 100644
index 0000000000..4f204d3dec
--- /dev/null
+++ b/libavformat/dovi_isom.c
@@ -0,0 +1,133 @@
+/*
+ * DOVI ISO Media common code
+ * Copyright (c) 2021 quietvoid
+ *
+ * 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
+ */
+
+#include "libavutil/dovi_meta.h"
+
+#include "libavcodec/put_bits.h"
+
+#include "avformat.h"
+#include "dovi_isom.h"
+
+int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t *buf_ptr, uint64_t size,
+ int has_dependency_pid)
+{
+ uint32_t buf;
+ AVDOVIDecoderConfigurationRecord *dovi;
+ size_t dovi_size;
+ int ret;
+ int min_compat_size;
+
+ if (size > (1 << 30) || size < 4)
+ return AVERROR_INVALIDDATA;
+
+ dovi = av_dovi_alloc(&dovi_size);
+ if (!dovi)
+ return AVERROR(ENOMEM);
+
+ dovi->dv_version_major = *buf_ptr++; // 8 bits
+ dovi->dv_version_minor = *buf_ptr++; // 8 bits
+
+ buf = *buf_ptr++ << 8;
+ buf |= *buf_ptr++;
+
+ dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits
+ dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits
+ dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit
+ dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit
+ dovi->bl_present_flag = buf & 0x01; // 1 bit
+
+ // For MPEG2 TS
+ if (has_dependency_pid && !dovi->bl_present_flag) {
+ // dependency_pid 13 bits + reserved 3 bits
+ buf = *buf_ptr++ << 8;
+ buf |= *buf_ptr++;
+
+ min_compat_size = 7;
+ } else {
+ min_compat_size = 5;
+ }
+
+ // Has enough remaining data
+ if (size >= min_compat_size) {
+ dovi->dv_bl_signal_compatibility_id = ((*buf_ptr++) >> 4) & 0x0f; // 4 bits
+ } else {
+ // 0 stands for None
+ // Dolby Vision V1.2.93 profiles and levels
+ dovi->dv_bl_signal_compatibility_id = 0;
+ }
+
+ ret = av_stream_add_side_data(st, AV_PKT_DATA_DOVI_CONF,
+ (uint8_t *)dovi, dovi_size);
+ if (ret < 0) {
+ av_free(dovi);
+ return ret;
+ }
+
+ av_log(s, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, "
+ "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+ dovi->dv_version_major, dovi->dv_version_minor,
+ dovi->dv_profile, dovi->dv_level,
+ dovi->rpu_present_flag,
+ dovi->el_present_flag,
+ dovi->bl_present_flag,
+ dovi->dv_bl_signal_compatibility_id
+ );
+
+ return 0;
+}
+
+int ff_isom_put_dvcc_dvvc(AVFormatContext *s, uint8_t out[ISOM_DVCC_DVVC_SIZE], uint64_t size,
+ AVDOVIDecoderConfigurationRecord *dovi)
+{
+ PutBitContext pb;
+ init_put_bits(&pb, out, size);
+
+ if (size < ISOM_DVCC_DVVC_SIZE)
+ return AVERROR(EINVAL);
+
+ put_bits(&pb, 8, dovi->dv_version_major);
+ put_bits(&pb, 8, dovi->dv_version_minor);
+ put_bits(&pb, 7, dovi->dv_profile);
+ put_bits(&pb, 6, dovi->dv_level);
+ put_bits(&pb, 1, dovi->rpu_present_flag);
+ put_bits(&pb, 1, dovi->el_present_flag);
+ put_bits(&pb, 1, dovi->bl_present_flag);
+ put_bits(&pb, 4, dovi->dv_bl_signal_compatibility_id);
+
+ put_bits(&pb, 28, 0); /* reserved */
+ put_bits32(&pb, 0); /* reserved */
+ put_bits32(&pb, 0); /* reserved */
+ put_bits32(&pb, 0); /* reserved */
+ put_bits32(&pb, 0); /* reserved */
+ flush_put_bits(&pb);
+
+ av_log(s, AV_LOG_DEBUG, "DOVI in %s box, version: %d.%d, profile: %d, level: %d, "
+ "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+ dovi->dv_profile > 7 ? "dvvC" : "dvcC",
+ dovi->dv_version_major, dovi->dv_version_minor,
+ dovi->dv_profile, dovi->dv_level,
+ dovi->rpu_present_flag,
+ dovi->el_present_flag,
+ dovi->bl_present_flag,
+ dovi->dv_bl_signal_compatibility_id);
+
+ return put_bytes_output(&pb);
+}
diff --git a/libavformat/dovi_isom.h b/libavformat/dovi_isom.h
new file mode 100644
index 0000000000..e1c6d6d63a
--- /dev/null
+++ b/libavformat/dovi_isom.h
@@ -0,0 +1,36 @@
+/*
+ * DOVI ISO Media common code
+ * Copyright (c) 2021 quietvoid
+ *
+ * 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
+ */
+
+#ifndef AVFORMAT_DOVI_ISOM_H
+#define AVFORMAT_DOVI_ISOM_H
+
+#include "libavutil/dovi_meta.h"
+
+#include "avformat.h"
+
+#define ISOM_DVCC_DVVC_SIZE 24
+
+int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t *buf_ptr, uint64_t size,
+ int has_dependency_pid);
+int ff_isom_put_dvcc_dvvc(AVFormatContext *s, uint8_t out[ISOM_DVCC_DVVC_SIZE], uint64_t size,
+ AVDOVIDecoderConfigurationRecord *dovi);
+
+#endif /* AVFORMAT_DOVI_ISOM_H */
--
2.33.0
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