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-rw-r--r--libavformat/mxfdec.c145
1 files changed, 133 insertions, 12 deletions
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 76a8329766..e1fec3dbbb 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -2,20 +2,20 @@
* MXF demuxer.
* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -51,6 +51,34 @@
#include "avformat.h"
#include "mxf.h"
+typedef enum {
+ Header,
+ BodyPartition,
+ Footer
+} MXFPartitionType;
+
+typedef enum {
+ OP1a,
+ OP1b,
+ OP1c,
+ OP2a,
+ OP2b,
+ OP2c,
+ OP3a,
+ OP3b,
+ OP3c,
+ OPAtom,
+} MXFOP;
+
+typedef struct {
+ int closed;
+ int complete;
+ MXFPartitionType type;
+ uint64_t previous_partition;
+ int index_sid;
+ int body_sid;
+} MXFPartition;
+
typedef struct {
UID uid;
enum MXFMetadataSetType type;
@@ -126,6 +154,9 @@ typedef struct {
} MXFMetadataSet;
typedef struct {
+ MXFPartition *partitions;
+ unsigned partitions_count;
+ MXFOP op;
UID *packages_refs;
int packages_count;
MXFMetadataSet **metadata_sets;
@@ -134,6 +165,7 @@ typedef struct {
struct AVAES *aesc;
uint8_t *local_tags;
int local_tags_count;
+ uint64_t footer_partition;
} MXFContext;
enum MXFWrappingScheme {
@@ -180,7 +212,7 @@ static int64_t klv_decode_ber_length(AVIOContext *pb)
static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
{
int i, b;
- for (i = 0; i < size && !pb->eof_reached; i++) {
+ for (i = 0; i < size && !url_feof(pb); i++) {
b = avio_r8(pb);
if (b == key[0])
i = 0;
@@ -311,7 +343,7 @@ static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
KLVPacket klv;
- while (!s->pb->eof_reached) {
+ while (!url_feof(s->pb)) {
if (klv_read_packet(&klv, s->pb) < 0)
return -1;
PRINT_KEY(s, "read packet", klv.key);
@@ -373,6 +405,80 @@ static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, U
return 0;
}
+static int mxf_read_partition_pack(void *arg, ByteIOContext *pb, int tag, int size, UID uid)
+{
+ MXFContext *mxf = arg;
+ MXFPartition *partition;
+ UID op;
+ uint64_t footer_partition;
+
+ if (mxf->partitions_count+1 >= UINT_MAX / sizeof(*mxf->partitions))
+ return AVERROR(ENOMEM);
+
+ mxf->partitions = av_realloc(mxf->partitions, (mxf->partitions_count + 1) * sizeof(*mxf->partitions));
+ if (!mxf->partitions)
+ return AVERROR(ENOMEM);
+
+ partition = &mxf->partitions[mxf->partitions_count++];
+
+ switch(uid[13]) {
+ case 2:
+ partition->type = Header;
+ break;
+ case 3:
+ partition->type = BodyPartition;
+ break;
+ case 4:
+ partition->type = Footer;
+ break;
+ default:
+ av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* consider both footers to be closed (there is only Footer and CompleteFooter) */
+ partition->closed = partition->type == Footer || !(uid[14] & 1);
+ partition->complete = uid[14] > 2;
+ avio_skip(pb, 16);
+ partition->previous_partition = avio_rb64(pb);
+ footer_partition = avio_rb64(pb);
+ avio_skip(pb, 16);
+ partition->index_sid = avio_rb32(pb);
+ avio_skip(pb, 8);
+ partition->body_sid = avio_rb32(pb);
+ avio_read(pb, op, sizeof(UID));
+
+ /* some files don'thave FooterPartition set in every partition */
+ if (footer_partition) {
+ if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
+ av_log(mxf->fc, AV_LOG_ERROR, "inconsistent FooterPartition value: %li != %li\n",
+ mxf->footer_partition, footer_partition);
+ } else {
+ mxf->footer_partition = footer_partition;
+ }
+ }
+
+ av_dlog(mxf->fc, "PartitionPack: PreviousPartition = 0x%lx, "
+ "FooterPartition = 0x%lx, IndexSID = %i, BodySID = %i\n",
+ partition->previous_partition, footer_partition,
+ partition->index_sid, partition->body_sid);
+
+ if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
+ else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
+ else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
+ else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
+ else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
+ else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
+ else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
+ else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
+ else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
+ else if (op[12] == 0x10) mxf->op = OPAtom;
+ else
+ av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh\n", op[12], op[13]);
+
+ return 0;
+}
+
static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
{
if (mxf->metadata_sets_count+1 >= UINT_MAX / sizeof(*mxf->metadata_sets))
@@ -830,12 +936,12 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
/* TODO: implement CODEC_ID_RAWAUDIO */
if (st->codec->codec_id == CODEC_ID_PCM_S16LE) {
- if (descriptor->bits_per_sample == 24)
+ if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
st->codec->codec_id = CODEC_ID_PCM_S24LE;
else if (descriptor->bits_per_sample == 32)
st->codec->codec_id = CODEC_ID_PCM_S32LE;
} else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) {
- if (descriptor->bits_per_sample == 24)
+ if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
st->codec->codec_id = CODEC_ID_PCM_S24BE;
else if (descriptor->bits_per_sample == 32)
st->codec->codec_id = CODEC_ID_PCM_S32BE;
@@ -853,6 +959,16 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
{ { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
+ { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage },
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage },
@@ -924,7 +1040,7 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
avio_seek(s->pb, -14, SEEK_CUR);
mxf->fc = s;
- while (!s->pb->eof_reached) {
+ while (!url_feof(s->pb)) {
const MXFMetadataReadTableEntry *metadata;
if (klv_read_packet(&klv, s->pb) < 0)
@@ -943,8 +1059,11 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
int res;
if (klv.key[5] == 0x53) {
res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type);
- } else
- res = metadata->read(mxf, s->pb, 0, 0, NULL);
+ } else {
+ uint64_t next = avio_tell(s->pb) + klv.length;
+ res = metadata->read(mxf, s->pb, 0, 0, klv.key);
+ avio_seek(s->pb, next, SEEK_SET);
+ }
if (res < 0) {
av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
return -1;
@@ -985,6 +1104,7 @@ static int mxf_read_close(AVFormatContext *s)
}
av_freep(&mxf->metadata_sets[i]);
}
+ av_freep(&mxf->partitions);
av_freep(&mxf->metadata_sets);
av_freep(&mxf->aesc);
av_freep(&mxf->local_tags);
@@ -1019,7 +1139,8 @@ static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_ti
if (sample_time < 0)
sample_time = 0;
seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
- avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
+ if (avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET) < 0)
+ return -1;
av_update_cur_dts(s, st, sample_time);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-21 15:42:34 +0000