* Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1
*/
-//#define DEBUG
-
#include "libavutil/aes.h"
#include "libavutil/mathematics.h"
#include "libavcodec/bytestream.h"
} MXFPartitionType;
typedef enum {
- OP1a,
+ OP1a = 1,
OP1b,
OP1c,
OP2a,
int track_id;
uint8_t track_number[4];
AVRational edit_rate;
+ int intra_only;
} MXFTrack;
typedef struct {
AVRational sample_rate;
AVRational aspect_ratio;
int width;
- int height;
+ int height; /* Field height, not frame height */
+ int frame_layout; /* See MXFFrameLayout enum */
int channels;
int bits_per_sample;
+ unsigned int component_depth;
+ unsigned int horiz_subsampling;
+ unsigned int vert_subsampling;
UID *sub_descriptors_refs;
int sub_descriptors_count;
int linked_track_id;
uint8_t *extradata;
int extradata_size;
- enum PixelFormat pix_fmt;
+ enum AVPixelFormat pix_fmt;
} MXFDescriptor;
typedef struct {
int edit_unit_byte_count;
int index_sid;
int body_sid;
- int slice_count;
AVRational index_edit_rate;
uint64_t index_start_position;
uint64_t index_duration;
- int *slice;
- int *element_delta;
- int nb_delta_entries;
int8_t *temporal_offset_entries;
int *flag_entries;
uint64_t *stream_offset_entries;
- uint32_t **slice_offset_entries;
int nb_index_entries;
} MXFIndexTableSegment;
enum MXFMetadataSetType type;
} MXFMetadataSet;
+/* decoded index table */
+typedef struct {
+ int index_sid;
+ int body_sid;
+ int nb_ptses; /* number of PTSes or total duration of index */
+ int64_t first_dts; /* DTS = EditUnit + first_dts */
+ int64_t *ptses; /* maps EditUnit -> PTS */
+ int nb_segments;
+ MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */
+ AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */
+} MXFIndexTable;
+
typedef struct {
MXFPartition *partitions;
unsigned partitions_count;
uint8_t *local_tags;
int local_tags_count;
uint64_t footer_partition;
- int64_t essence_offset;
- int first_essence_kl_length;
- int64_t first_essence_length;
KLVPacket current_klv_data;
int current_klv_index;
int run_in;
int parsing_backward;
int64_t last_forward_tell;
int last_forward_partition;
+ int current_edit_unit;
+ int nb_index_tables;
+ MXFIndexTable *index_tables;
+ int edit_units_per_packet; ///< how many edit units to read at a time (PCM, OPAtom)
} MXFContext;
enum MXFWrappingScheme {
/* partial keys to match */
static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
+static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 };
static const uint8_t mxf_system_item_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04 };
static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
/* complete keys to match */
int index;
if (!mxf->aesc && s->key && s->keylen == 16) {
- mxf->aesc = av_malloc(av_aes_size);
+ mxf->aesc = av_aes_alloc();
if (!mxf->aesc)
return AVERROR(ENOMEM);
av_aes_init(mxf->aesc, s->key, 128, 1);
return 0;
}
-static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- KLVPacket klv;
-
- while (!s->pb->eof_reached) {
- int ret;
- if (klv_read_packet(&klv, s->pb) < 0)
- return -1;
- PRINT_KEY(s, "read packet", klv.key);
- av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
- if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
- ret = mxf_decrypt_triplet(s, pkt, &klv);
- if (ret < 0) {
- av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
- return AVERROR_INVALIDDATA;
- }
- return 0;
- }
- if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
- int index = mxf_get_stream_index(s, &klv);
- if (index < 0) {
- av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
- goto skip;
- }
- if (s->streams[index]->discard == AVDISCARD_ALL)
- goto skip;
- /* check for 8 channels AES3 element */
- if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
- if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
- av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
- return AVERROR_INVALIDDATA;
- }
- } else {
- ret = av_get_packet(s->pb, pkt, klv.length);
- if (ret < 0)
- return ret;
- }
- pkt->stream_index = index;
- pkt->pos = klv.offset;
- return 0;
- } else
- skip:
- avio_skip(s->pb, klv.length);
- }
- return AVERROR_EOF;
-}
-
static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
{
MXFContext *mxf = arg;
int item_len = avio_rb32(pb);
if (item_len != 18) {
- av_log_ask_for_sample(pb, "unsupported primer pack item length %d\n",
- item_len);
+ avpriv_request_sample(pb, "Primer pack item length %d", item_len);
return AVERROR_PATCHWELCOME;
}
if (item_num > UINT_MAX / item_len)
static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
{
MXFContext *mxf = arg;
- MXFPartition *partition;
+ MXFPartition *partition, *tmp_part;
UID op;
uint64_t footer_partition;
+ uint32_t nb_essence_containers;
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)
+ tmp_part = av_realloc(mxf->partitions, (mxf->partitions_count + 1) * sizeof(*mxf->partitions));
+ if (!tmp_part)
return AVERROR(ENOMEM);
+ mxf->partitions = tmp_part;
if (mxf->parsing_backward) {
/* insert the new partition pack in the middle
avio_skip(pb, 8);
partition->body_sid = avio_rb32(pb);
avio_read(pb, op, sizeof(UID));
+ nb_essence_containers = avio_rb32(pb);
/* 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",
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
mxf->footer_partition, footer_partition);
} else {
mxf->footer_partition = footer_partition;
}
}
- av_dlog(mxf->fc, "PartitionPack: ThisPartition = 0x%lx, PreviousPartition = 0x%lx, "
- "FooterPartition = 0x%lx, IndexSID = %i, BodySID = %i\n",
+ av_dlog(mxf->fc,
+ "PartitionPack: ThisPartition = 0x%"PRIX64
+ ", PreviousPartition = 0x%"PRIX64", "
+ "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
partition->this_partition,
partition->previous_partition, footer_partition,
partition->index_sid, partition->body_sid);
+ /* sanity check PreviousPartition if set */
+ if (partition->previous_partition &&
+ mxf->run_in + partition->previous_partition >= klv_offset) {
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "PreviousPartition points to this partition or forward\n");
+ return AVERROR_INVALIDDATA;
+ }
+
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] == 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 if (op[12] == 64&& op[13] == 1) mxf->op = OPSonyOpt;
- else {
+ else if (op[12] == 0x10) {
+ /* SMPTE 390m: "There shall be exactly one essence container"
+ * The following block deals with files that violate this, namely:
+ * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
+ * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
+ if (nb_essence_containers != 1) {
+ MXFOP op = nb_essence_containers ? OP1a : OPAtom;
+
+ /* only nag once */
+ if (!mxf->op)
+ av_log(mxf->fc, AV_LOG_WARNING,
+ "\"OPAtom\" with %u ECs - assuming %s\n",
+ nb_essence_containers,
+ op == OP1a ? "OP1a" : "OPAtom");
+
+ mxf->op = op;
+ } else
+ mxf->op = OPAtom;
+ } else {
av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
mxf->op = OP1a;
}
static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
{
+ MXFMetadataSet **tmp;
if (mxf->metadata_sets_count+1 >= UINT_MAX / sizeof(*mxf->metadata_sets))
return AVERROR(ENOMEM);
- mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
- if (!mxf->metadata_sets)
+ tmp = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
+ if (!tmp)
return AVERROR(ENOMEM);
+ mxf->metadata_sets = tmp;
mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
mxf->metadata_sets_count++;
return 0;
avio_read(pb, track->track_number, 4);
break;
case 0x4B01:
- track->edit_rate.den = avio_rb32(pb);
track->edit_rate.num = avio_rb32(pb);
+ track->edit_rate.den = avio_rb32(pb);
break;
case 0x4803:
avio_read(pb, track->sequence_ref, 16);
return 0;
}
-static int mxf_read_delta_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
-{
- int i, length;
-
- segment->nb_delta_entries = avio_rb32(pb);
- if (segment->nb_delta_entries < 1 ||
- segment->nb_delta_entries > INT_MAX >> av_log2(sizeof(*segment->slice)))
- return AVERROR(ENOMEM);
-
- length = avio_rb32(pb);
-
- segment->slice = av_mallocz(segment->nb_delta_entries *
- sizeof(*segment->slice));
- if (!segment->slice)
- return AVERROR(ENOMEM);
- segment->element_delta = av_mallocz(segment->nb_delta_entries *
- sizeof(*segment->element_delta));
- if (!segment->element_delta) {
- av_freep(&segment->slice);
- return AVERROR(ENOMEM);
- }
-
- for (i = 0; i < segment->nb_delta_entries; i++) {
- avio_r8(pb); /* PosTableIndex */
- segment->slice[i] = avio_r8(pb);
- segment->element_delta[i] = avio_rb32(pb);
- }
- return 0;
-}
-
static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
{
- int i, j, length;
+ int i, length;
segment->nb_index_entries = avio_rb32(pb);
if (!segment->nb_index_entries)
return 0;
else if (segment->nb_index_entries < 0 ||
segment->nb_index_entries >
- (INT_MAX >> av_log2(sizeof(*segment->stream_offset_entries))))
+ (INT_MAX / sizeof(*segment->stream_offset_entries)))
return AVERROR(ENOMEM);
length = avio_rb32(pb);
sizeof(*segment->flag_entries));
segment->stream_offset_entries = av_mallocz(segment->nb_index_entries *
sizeof(*segment->stream_offset_entries));
- segment->slice_offset_entries = av_mallocz(segment->nb_index_entries *
- sizeof(*segment->slice_offset_entries));
- if (!segment->flag_entries || !segment->stream_offset_entries ||
- !segment->slice_offset_entries || !segment->temporal_offset_entries)
- goto errmem;
+ if (!segment->flag_entries || !segment->stream_offset_entries ||
+ !segment->temporal_offset_entries) {
+ av_freep(&segment->flag_entries);
+ av_freep(&segment->stream_offset_entries);
+ av_freep(&segment->temporal_offset_entries);
+ return AVERROR(ENOMEM);
+ }
for (i = 0; i < segment->nb_index_entries; i++) {
segment->temporal_offset_entries[i] = avio_r8(pb);
avio_r8(pb); /* KeyFrameOffset */
segment->flag_entries[i] = avio_r8(pb);
segment->stream_offset_entries[i] = avio_rb64(pb);
- if (segment->slice_count) {
- segment->slice_offset_entries[i] = av_mallocz(segment->slice_count *
- sizeof(**segment->slice_offset_entries));
- if (!segment->slice_offset_entries[i])
- goto errmem;
-
- for (j = 0; j < segment->slice_count; j++)
- segment->slice_offset_entries[i][j] = avio_rb32(pb);
- }
-
- avio_skip(pb, length - 11 - 4 * segment->slice_count);
+ avio_skip(pb, length - 11);
}
return 0;
-errmem:
- if (segment->slice_offset_entries && segment->slice_count) {
- for (i = 0; i < segment->nb_index_entries; i++)
- av_free(segment->slice_offset_entries[i]);
- }
- av_freep(&segment->flag_entries);
- av_freep(&segment->stream_offset_entries);
- av_freep(&segment->slice_offset_entries);
- av_freep(&segment->temporal_offset_entries);
- return AVERROR(ENOMEM);
}
static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
segment->body_sid = avio_rb32(pb);
av_dlog(NULL, "BodySID %d\n", segment->body_sid);
break;
- case 0x3F08:
- segment->slice_count = avio_r8(pb);
- av_dlog(NULL, "SliceCount %d\n", segment->slice_count);
- break;
- case 0x3F09:
- av_dlog(NULL, "DeltaEntryArray found\n");
- return mxf_read_delta_entry_array(pb, segment);
case 0x3F0A:
av_dlog(NULL, "IndexEntryArray found\n");
return mxf_read_index_entry_array(pb, segment);
static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
{
MXFDescriptor *descriptor = arg;
+ descriptor->pix_fmt = AV_PIX_FMT_NONE;
switch(tag) {
case 0x3F01:
descriptor->sub_descriptors_count = avio_rb32(pb);
case 0x3202:
descriptor->height = avio_rb32(pb);
break;
+ case 0x320C:
+ descriptor->frame_layout = avio_r8(pb);
+ break;
case 0x320E:
descriptor->aspect_ratio.num = avio_rb32(pb);
descriptor->aspect_ratio.den = avio_rb32(pb);
break;
+ case 0x3301:
+ descriptor->component_depth = avio_rb32(pb);
+ break;
+ case 0x3302:
+ descriptor->horiz_subsampling = avio_rb32(pb);
+ break;
+ case 0x3308:
+ descriptor->vert_subsampling = avio_rb32(pb);
+ break;
case 0x3D03:
descriptor->sample_rate.num = avio_rb32(pb);
descriptor->sample_rate.den = avio_rb32(pb);
return NULL;
}
-static const MXFCodecUL mxf_essence_container_uls[] = {
+static const MXFCodecUL mxf_picture_essence_container_uls[] = {
// video essence container uls
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO }, /* Uncompressed Picture */
+ { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
+};
+
+/* EC ULs for intra-only formats */
+static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MXF-GC SMPTE D-10 Mappings */
+ { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
+};
+
+/* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
+static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14, AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra Profiles */
+ { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
+};
+
+static const MXFCodecUL mxf_sound_essence_container_uls[] = {
// sound essence container uls
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */
- { { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0xFF,0x4B,0x46,0x41,0x41,0x00,0x0D,0x4D,0x4F }, 14, CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */
- { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE },
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
+ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */
+ { { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0xFF,0x4B,0x46,0x41,0x41,0x00,0x0D,0x4D,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */
+ { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
};
static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
if (mxf->metadata_sets[i]->type == IndexTableSegment)
nb_segments++;
+ if (!nb_segments)
+ return AVERROR_INVALIDDATA;
+
*sorted_segments = av_mallocz(nb_segments * sizeof(**sorted_segments));
unsorted_segments = av_mallocz(nb_segments * sizeof(*unsorted_segments));
- if (!sorted_segments || !unsorted_segments) {
+ if (!*sorted_segments || !unsorted_segments) {
av_freep(sorted_segments);
av_free(unsorted_segments);
return AVERROR(ENOMEM);
return 0;
}
-static int mxf_parse_index(MXFContext *mxf, int track_id, AVStream *st)
+/**
+ * Computes the absolute file offset of the given essence container offset
+ */
+static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
{
- int64_t accumulated_offset = 0;
- int j, k, ret, nb_sorted_segments;
- MXFIndexTableSegment **sorted_segments;
- int n_delta = track_id - 1; /* TrackID = 1-based stream index */
+ int x;
+ int64_t offset_in = offset; /* for logging */
- if (track_id < 1) {
- av_log(mxf->fc, AV_LOG_ERROR, "TrackID not positive: %i\n", track_id);
- return AVERROR_INVALIDDATA;
+ for (x = 0; x < mxf->partitions_count; x++) {
+ MXFPartition *p = &mxf->partitions[x];
+
+ if (p->body_sid != body_sid)
+ continue;
+
+ if (offset < p->essence_length || !p->essence_length) {
+ *offset_out = p->essence_offset + offset;
+ return 0;
+ }
+
+ offset -= p->essence_length;
}
- if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)))
- return ret;
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
+ offset_in, body_sid);
- for (j = 0; j < nb_sorted_segments; j++) {
- int duration, sample_duration = 1, last_sample_size = 0;
- int64_t segment_size;
- MXFIndexTableSegment *tableseg = sorted_segments[j];
+ return AVERROR_INVALIDDATA;
+}
- /* reset accumulated_offset on BodySID change */
- if (j > 0 && tableseg->body_sid != sorted_segments[j-1]->body_sid)
- accumulated_offset = 0;
+/**
+ * Returns the end position of the essence container with given BodySID, or zero if unknown
+ */
+static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
+{
+ int x;
+ int64_t ret = 0;
- if (n_delta >= tableseg->nb_delta_entries && st->index != 0)
+ for (x = 0; x < mxf->partitions_count; x++) {
+ MXFPartition *p = &mxf->partitions[x];
+
+ if (p->body_sid != body_sid)
continue;
- duration = tableseg->index_duration > 0 ? tableseg->index_duration :
- st->duration - st->nb_index_entries;
- segment_size = tableseg->edit_unit_byte_count * duration;
- /* check small EditUnitByteCount for audio */
- if (tableseg->edit_unit_byte_count && tableseg->edit_unit_byte_count < 32
- && !tableseg->index_duration) {
- /* duration might be prime relative to the new sample_duration,
- * which means we need to handle the last frame differently */
- sample_duration = 8192;
- last_sample_size = (duration % sample_duration) * tableseg->edit_unit_byte_count;
- tableseg->edit_unit_byte_count *= sample_duration;
- duration /= sample_duration;
- if (last_sample_size) duration++;
- }
- for (k = 0; k < duration; k++) {
- int64_t pos;
- int size, flags = 0;
-
- if (k < tableseg->nb_index_entries) {
- pos = tableseg->stream_offset_entries[k];
- if (n_delta < tableseg->nb_delta_entries) {
- if (n_delta < tableseg->nb_delta_entries - 1) {
- size =
- tableseg->slice_offset_entries[k][tableseg->slice[n_delta+1]-1] +
- tableseg->element_delta[n_delta+1] -
- tableseg->element_delta[n_delta];
- if (tableseg->slice[n_delta] > 0)
- size -= tableseg->slice_offset_entries[k][tableseg->slice[n_delta]-1];
- } else if (k < duration - 1) {
- size = tableseg->stream_offset_entries[k+1] -
- tableseg->stream_offset_entries[k] -
- tableseg->slice_offset_entries[k][tableseg->slice[tableseg->nb_delta_entries-1]-1] -
- tableseg->element_delta[tableseg->nb_delta_entries-1];
- } else
- size = 0;
- if (tableseg->slice[n_delta] > 0)
- pos += tableseg->slice_offset_entries[k][tableseg->slice[n_delta]-1];
- pos += tableseg->element_delta[n_delta];
- } else
- size = 0;
- flags = !(tableseg->flag_entries[k] & 0x30) ? AVINDEX_KEYFRAME : 0;
- } else {
- pos = (int64_t)k * tableseg->edit_unit_byte_count + accumulated_offset;
- if (n_delta < tableseg->nb_delta_entries - 1)
- size = tableseg->element_delta[n_delta+1] - tableseg->element_delta[n_delta];
- else {
- /* use smaller size for last sample if we should */
- if (last_sample_size && k == duration - 1)
- size = last_sample_size;
- else
- size = tableseg->edit_unit_byte_count;
- if (tableseg->nb_delta_entries)
- size -= tableseg->element_delta[tableseg->nb_delta_entries-1];
+ if (!p->essence_length)
+ return 0;
+
+ ret = p->essence_offset + p->essence_length;
+ }
+
+ return ret;
+}
+
+/* EditUnit -> absolute offset */
+static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag)
+{
+ int i;
+ int64_t offset_temp = 0;
+
+ for (i = 0; i < index_table->nb_segments; i++) {
+ MXFIndexTableSegment *s = index_table->segments[i];
+
+ edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
+
+ if (edit_unit < s->index_start_position + s->index_duration) {
+ int64_t index = edit_unit - s->index_start_position;
+
+ if (s->edit_unit_byte_count)
+ offset_temp += s->edit_unit_byte_count * index;
+ else if (s->nb_index_entries) {
+ if (s->nb_index_entries == 2 * s->index_duration + 1)
+ index *= 2; /* Avid index */
+
+ if (index < 0 || index >= s->nb_index_entries) {
+ av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
+ index_table->index_sid, s->index_start_position);
+ return AVERROR_INVALIDDATA;
}
- if (n_delta < tableseg->nb_delta_entries)
- pos += tableseg->element_delta[n_delta];
- flags = AVINDEX_KEYFRAME;
+
+ offset_temp = s->stream_offset_entries[index];
+ } else {
+ av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
+ index_table->index_sid, s->index_start_position);
+ return AVERROR_INVALIDDATA;
}
- if (k > 0 && pos < mxf->first_essence_length && accumulated_offset == 0)
- pos += mxf->first_essence_kl_length;
+ if (edit_unit_out)
+ *edit_unit_out = edit_unit;
- pos += mxf->essence_offset;
+ return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out);
+ } else {
+ /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
+ offset_temp += s->edit_unit_byte_count * s->index_duration;
+ }
+ }
- av_dlog(mxf->fc, "Stream %d IndexEntry %d TrackID %d Offset %"PRIx64" Timestamp %"PRId64"\n",
- st->index, st->nb_index_entries, track_id, pos, sample_duration * st->nb_index_entries);
+ if (nag)
+ av_log(mxf->fc, AV_LOG_ERROR, "failed to map EditUnit %"PRId64" in IndexSID %i to an offset\n", edit_unit, index_table->index_sid);
- if ((ret = av_add_index_entry(st, pos, sample_duration * st->nb_index_entries, size, 0, flags)) < 0)
- return ret;
+ return AVERROR_INVALIDDATA;
+}
+
+static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
+{
+ int i, j, x;
+ int8_t max_temporal_offset = -128;
+
+ /* first compute how many entries we have */
+ for (i = 0; i < index_table->nb_segments; i++) {
+ MXFIndexTableSegment *s = index_table->segments[i];
+
+ if (!s->nb_index_entries) {
+ index_table->nb_ptses = 0;
+ return 0; /* no TemporalOffsets */
}
- accumulated_offset += segment_size;
+
+ index_table->nb_ptses += s->index_duration;
}
- av_free(sorted_segments);
+ /* paranoid check */
+ if (index_table->nb_ptses <= 0)
+ return 0;
+
+ if (index_table->nb_ptses > INT_MAX / sizeof(AVIndexEntry))
+ return AVERROR(ENOMEM);
+
+ index_table->ptses = av_mallocz(index_table->nb_ptses *
+ sizeof(int64_t));
+ index_table->fake_index = av_mallocz(index_table->nb_ptses *
+ sizeof(AVIndexEntry));
+ if (!index_table->ptses || !index_table->fake_index) {
+ av_freep(&index_table->ptses);
+ return AVERROR(ENOMEM);
+ }
+
+ /* we may have a few bad TemporalOffsets
+ * make sure the corresponding PTSes don't have the bogus value 0 */
+ for (x = 0; x < index_table->nb_ptses; x++)
+ index_table->ptses[x] = AV_NOPTS_VALUE;
+
+ /**
+ * We have this:
+ *
+ * x TemporalOffset
+ * 0: 0
+ * 1: 1
+ * 2: 1
+ * 3: -2
+ * 4: 1
+ * 5: 1
+ * 6: -2
+ *
+ * We want to transform it into this:
+ *
+ * x DTS PTS
+ * 0: -1 0
+ * 1: 0 3
+ * 2: 1 1
+ * 3: 2 2
+ * 4: 3 6
+ * 5: 4 4
+ * 6: 5 5
+ *
+ * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
+ * then settings mxf->first_dts = -max(TemporalOffset[x]).
+ * The latter makes DTS <= PTS.
+ */
+ for (i = x = 0; i < index_table->nb_segments; i++) {
+ MXFIndexTableSegment *s = index_table->segments[i];
+ int index_delta = 1;
+ int n = s->nb_index_entries;
+
+ if (s->nb_index_entries == 2 * s->index_duration + 1) {
+ index_delta = 2; /* Avid index */
+ /* ignore the last entry - it's the size of the essence container */
+ n--;
+ }
+
+ for (j = 0; j < n; j += index_delta, x++) {
+ int offset = s->temporal_offset_entries[j] / index_delta;
+ int index = x + offset;
+
+ if (x >= index_table->nb_ptses) {
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
+ s->nb_index_entries, s->index_duration);
+ break;
+ }
+
+ index_table->fake_index[x].timestamp = x;
+ index_table->fake_index[x].flags = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
+
+ if (index < 0 || index >= index_table->nb_ptses) {
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
+ x, offset, index);
+ continue;
+ }
+
+ index_table->ptses[index] = x;
+ max_temporal_offset = FFMAX(max_temporal_offset, offset);
+ }
+ }
+
+ index_table->first_dts = -max_temporal_offset;
return 0;
}
+/**
+ * Sorts and collects index table segments into index tables.
+ * Also computes PTSes if possible.
+ */
+static int mxf_compute_index_tables(MXFContext *mxf)
+{
+ int i, j, k, ret, nb_sorted_segments;
+ MXFIndexTableSegment **sorted_segments = NULL;
+
+ if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
+ nb_sorted_segments <= 0) {
+ av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
+ return 0;
+ }
+
+ /* sanity check and count unique BodySIDs/IndexSIDs */
+ for (i = 0; i < nb_sorted_segments; i++) {
+ if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
+ mxf->nb_index_tables++;
+ else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
+ av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
+ ret = AVERROR_INVALIDDATA;
+ goto finish_decoding_index;
+ }
+ }
+
+ if (mxf->nb_index_tables > INT_MAX / sizeof(MXFIndexTable) ||
+ !(mxf->index_tables = av_mallocz(mxf->nb_index_tables *
+ sizeof(MXFIndexTable)))) {
+ av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
+ ret = AVERROR(ENOMEM);
+ goto finish_decoding_index;
+ }
+
+ /* distribute sorted segments to index tables */
+ for (i = j = 0; i < nb_sorted_segments; i++) {
+ if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
+ /* next IndexSID */
+ j++;
+ }
+
+ mxf->index_tables[j].nb_segments++;
+ }
+
+ for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
+ MXFIndexTable *t = &mxf->index_tables[j];
+
+ if (t->nb_segments >
+ (INT_MAX / sizeof(MXFIndexTableSegment *)) ||
+ !(t->segments = av_mallocz(t->nb_segments *
+ sizeof(MXFIndexTableSegment*)))) {
+ av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
+ " pointer array\n");
+ ret = AVERROR(ENOMEM);
+ goto finish_decoding_index;
+ }
+
+ if (sorted_segments[i]->index_start_position)
+ av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
+ sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
+
+ memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
+ t->index_sid = sorted_segments[i]->index_sid;
+ t->body_sid = sorted_segments[i]->body_sid;
+
+ if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
+ goto finish_decoding_index;
+
+ /* fix zero IndexDurations */
+ for (k = 0; k < t->nb_segments; k++) {
+ if (t->segments[k]->index_duration)
+ continue;
+
+ if (t->nb_segments > 1)
+ av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
+ t->index_sid, k);
+
+ if (mxf->fc->nb_streams <= 0) {
+ av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
+ break;
+ }
+
+ /* assume the first stream's duration is reasonable
+ * leave index_duration = 0 on further segments in case we have any (unlikely)
+ */
+ t->segments[k]->index_duration = mxf->fc->streams[0]->duration;
+ break;
+ }
+ }
+
+ ret = 0;
+finish_decoding_index:
+ av_free(sorted_segments);
+ return ret;
+}
+
+static int mxf_is_intra_only(MXFDescriptor *d)
+{
+ return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
+ &d->essence_container_ul)->id != AV_CODEC_ID_NONE ||
+ mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
+ &d->essence_codec_ul)->id != AV_CODEC_ID_NONE;
+}
+
static int mxf_parse_structural_metadata(MXFContext *mxf)
{
MXFPackage *material_package = NULL;
UID *essence_container_ul = NULL;
const MXFCodecUL *codec_ul = NULL;
const MXFCodecUL *container_ul = NULL;
+ const MXFCodecUL *pix_fmt_ul = NULL;
AVStream *st;
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
for (k = 0; k < source_package->tracks_count; k++) {
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
- return AVERROR_INVALIDDATA;
+ ret = AVERROR_INVALIDDATA;
+ goto fail_and_free;
}
if (temp_track->track_id == component->source_track_id) {
source_track = temp_track;
break;
}
}
- if (!source_track)
+ if (!source_track || !component)
continue;
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
- return AVERROR_INVALIDDATA;
+ ret = AVERROR_INVALIDDATA;
+ goto fail_and_free;
}
/* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
st = avformat_new_stream(mxf->fc, NULL);
if (!st) {
av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
- return AVERROR(ENOMEM);
+ ret = AVERROR(ENOMEM);
+ goto fail_and_free;
}
st->id = source_track->track_id;
st->priv_data = source_track;
if (st->duration == -1)
st->duration = AV_NOPTS_VALUE;
st->start_time = component->start_position;
- avpriv_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
+ avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
}
}
}
+
/* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
st->codec->codec_id = codec_ul->id;
st->codec->extradata_size = descriptor->extradata_size;
}
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
- container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
- if (st->codec->codec_id == CODEC_ID_NONE)
+ source_track->intra_only = mxf_is_intra_only(descriptor);
+ container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
+ if (st->codec->codec_id == AV_CODEC_ID_NONE)
st->codec->codec_id = container_ul->id;
st->codec->width = descriptor->width;
+ /* Field height, not frame height */
st->codec->height = descriptor->height;
- if (st->codec->codec_id == CODEC_ID_RAWVIDEO)
+ switch (descriptor->frame_layout) {
+ case SegmentedFrame:
+ /* This one is a weird layout I don't fully understand. */
+ av_log(mxf->fc, AV_LOG_INFO,
+ "SegmentedFrame layout isn't currently supported\n");
+ break;
+ case FullFrame:
+ break;
+ case OneField:
+ /* Every other line is stored and needs to be duplicated. */
+ av_log(mxf->fc, AV_LOG_INFO,
+ "OneField frame layout isn't currently supported\n");
+ break;
+ /* The correct thing to do here is fall through, but by
+ * breaking we might be able to decode some streams at half
+ * the vertical resolution, rather than not al all.
+ * It's also for compatibility with the old behavior. */
+ case SeparateFields:
+ case MixedFields:
+ /* Turn field height into frame height. */
+ st->codec->height *= 2;
+ default:
+ av_log(mxf->fc, AV_LOG_INFO,
+ "Unknown frame layout type: %d\n",
+ descriptor->frame_layout);
+ }
+ if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
st->codec->pix_fmt = descriptor->pix_fmt;
+ if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
+ pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
+ &descriptor->essence_codec_ul);
+ st->codec->pix_fmt = pix_fmt_ul->id;
+ if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
+ /* support files created before RP224v10 by defaulting to UYVY422
+ if subsampling is 4:2:2 and component depth is 8-bit */
+ if (descriptor->horiz_subsampling == 2 &&
+ descriptor->vert_subsampling == 1 &&
+ descriptor->component_depth == 8) {
+ st->codec->pix_fmt = AV_PIX_FMT_UYVY422;
+ }
+ }
+ }
+ }
st->need_parsing = AVSTREAM_PARSE_HEADERS;
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
- container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
- if (st->codec->codec_id == CODEC_ID_NONE)
+ container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
+ if (st->codec->codec_id == AV_CODEC_ID_NONE)
st->codec->codec_id = container_ul->id;
st->codec->channels = descriptor->channels;
st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
- 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->sample_rate.den > 0)
+ st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
+
+ /* TODO: implement AV_CODEC_ID_RAWAUDIO */
+ if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
- st->codec->codec_id = CODEC_ID_PCM_S24LE;
+ st->codec->codec_id = AV_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) {
+ st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
+ } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
- st->codec->codec_id = CODEC_ID_PCM_S24BE;
+ st->codec->codec_id = AV_CODEC_ID_PCM_S24BE;
else if (descriptor->bits_per_sample == 32)
- st->codec->codec_id = CODEC_ID_PCM_S32BE;
- } else if (st->codec->codec_id == CODEC_ID_MP2) {
+ st->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
+ } else if (st->codec->codec_id == AV_CODEC_ID_MP2) {
st->need_parsing = AVSTREAM_PARSE_FULL;
}
}
if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
- av_log(mxf->fc, AV_LOG_WARNING, "only frame wrapped mappings are correctly supported\n");
- st->need_parsing = AVSTREAM_PARSE_FULL;
+ /* TODO: decode timestamps */
+ st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
}
-
- if ((ret = mxf_parse_index(mxf, material_track->track_id, st)))
- return ret;
}
- return 0;
+
+ ret = 0;
+fail_and_free:
+ return ret;
}
static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
if (!ctx)
return AVERROR(ENOMEM);
- while (avio_tell(pb) + 4 < klv_end) {
+ while (avio_tell(pb) + 4 < klv_end && !pb->eof_reached) {
int ret;
int tag = avio_rb16(pb);
int size = avio_rb16(pb); /* KLV specified by 0x53 */
else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0)
return ret;
- avio_seek(pb, next, SEEK_SET);
+ /* Accept the 64k local set limit being exceeded (Avid). Don't accept
+ * it extending past the end of the KLV though (zzuf5.mxf). */
+ if (avio_tell(pb) > klv_end) {
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "local tag %#04x extends past end of local set @ %#"PRIx64"\n",
+ tag, klv->offset);
+ return AVERROR_INVALIDDATA;
+ } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
+ avio_seek(pb, next, SEEK_SET);
}
if (ctx_size) ctx->type = type;
return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
AVIOContext *pb = mxf->fc->pb;
int64_t ret;
- if (!mxf->current_partition) {
- av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to PartitionPack\n");
- return AVERROR_INVALIDDATA;
- }
-
if (mxf->parsing_backward) {
return mxf_seek_to_previous_partition(mxf);
} else {
if (p->essence_length < 0) {
/* next ThisPartition < essence_offset */
p->essence_length = 0;
- av_log(mxf->fc, AV_LOG_ERROR, "partition %i: bad ThisPartition = %lx\n",
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "partition %i: bad ThisPartition = %"PRIX64"\n",
x+1, mxf->partitions[x+1].this_partition);
}
}
}
}
-static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int is_pcm(enum AVCodecID codec_id)
+{
+ /* we only care about "normal" PCM codecs until we get samples */
+ return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
+}
+
+/**
+ * Deal with the case where for some audio atoms EditUnitByteCount is
+ * very small (2, 4..). In those cases we should read more than one
+ * sample per call to mxf_read_packet().
+ */
+static void mxf_handle_small_eubc(AVFormatContext *s)
+{
+ MXFContext *mxf = s->priv_data;
+
+ /* assuming non-OPAtom == frame wrapped
+ * no sane writer would wrap 2 byte PCM packets with 20 byte headers.. */
+ if (mxf->op != OPAtom)
+ return;
+
+ /* expect PCM with exactly one index table segment and a small (< 32) EUBC */
+ if (s->nb_streams != 1 ||
+ s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
+ !is_pcm(s->streams[0]->codec->codec_id) ||
+ mxf->nb_index_tables != 1 ||
+ mxf->index_tables[0].nb_segments != 1 ||
+ mxf->index_tables[0].segments[0]->edit_unit_byte_count >= 32)
+ return;
+
+ /* arbitrarily default to 48 kHz PAL audio frame size */
+ /* TODO: We could compute this from the ratio between the audio
+ * and video edit rates for 48 kHz NTSC we could use the
+ * 1802-1802-1802-1802-1801 pattern. */
+ mxf->edit_units_per_packet = 1920;
+}
+
+static int mxf_read_header(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
KLVPacket klv;
+ int64_t essence_offset = 0;
+ int ret;
mxf->last_forward_tell = INT64_MAX;
+ mxf->edit_units_per_packet = 1;
if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
+ IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) ||
IS_KLV_KEY(klv.key, mxf_system_item_key)) {
+
+ if (!mxf->current_partition) {
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "found essence prior to first PartitionPack\n");
+ return AVERROR_INVALIDDATA;
+ }
+
if (!mxf->current_partition->essence_offset) {
compute_partition_essence_offset(s, mxf, &klv);
}
- if (!mxf->essence_offset)
- mxf->essence_offset = klv.offset;
-
- if (!mxf->first_essence_kl_length && IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
- mxf->first_essence_kl_length = avio_tell(s->pb) - klv.offset;
- mxf->first_essence_length = klv.length;
- }
+ if (!essence_offset)
+ essence_offset = klv.offset;
/* seek to footer, previous partition or stop */
if (mxf_parse_handle_essence(mxf) <= 0)
/* next partition pack - keep going, seek to previous partition or stop */
if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
break;
+ else if (mxf->parsing_backward)
+ continue;
+ /* we're still parsing forward. proceed to parsing this partition pack */
}
for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
} else {
uint64_t next = avio_tell(s->pb) + klv.length;
res = metadata->read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
+
+ /* only seek forward, else this can loop for a long time */
+ if (avio_tell(s->pb) > next) {
+ av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
+ klv.offset);
+ return AVERROR_INVALIDDATA;
+ }
+
avio_seek(s->pb, next, SEEK_SET);
}
if (res < 0) {
avio_skip(s->pb, klv.length);
}
/* FIXME avoid seek */
- if (!mxf->essence_offset) {
+ if (!essence_offset) {
av_log(s, AV_LOG_ERROR, "no essence\n");
return AVERROR_INVALIDDATA;
}
- avio_seek(s->pb, mxf->essence_offset, SEEK_SET);
+ avio_seek(s->pb, essence_offset, SEEK_SET);
mxf_compute_essence_containers(mxf);
- return mxf_parse_structural_metadata(mxf);
+ /* we need to do this before computing the index tables
+ * to be able to fill in zero IndexDurations with st->duration */
+ if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
+ return ret;
+
+ if ((ret = mxf_compute_index_tables(mxf)) < 0)
+ return ret;
+
+ if (mxf->nb_index_tables > 1) {
+ /* TODO: look up which IndexSID to use via EssenceContainerData */
+ av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
+ mxf->nb_index_tables, mxf->index_tables[0].index_sid);
+ } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom) {
+ av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ mxf_handle_small_eubc(s);
+
+ return 0;
+}
+
+/**
+ * Sets mxf->current_edit_unit based on what offset we're currently at.
+ * @return next_ofs if OK, <0 on error
+ */
+static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset)
+{
+ int64_t last_ofs = -1, next_ofs = -1;
+ MXFIndexTable *t = &mxf->index_tables[0];
+
+ /* this is called from the OP1a demuxing logic, which means there
+ * may be no index tables */
+ if (mxf->nb_index_tables <= 0)
+ return -1;
+
+ /* find mxf->current_edit_unit so that the next edit unit starts ahead
+ * of current_offset */
+ while (mxf->current_edit_unit >= 0) {
+ if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1,
+ NULL, &next_ofs, 0) < 0)
+ return -1;
+
+ if (next_ofs <= last_ofs) {
+ /* large next_ofs didn't change or current_edit_unit wrapped
+ * around this fixes the infinite loop on zzuf3.mxf */
+ av_log(mxf->fc, AV_LOG_ERROR,
+ "next_ofs didn't change. not deriving packet timestamps\n");
+ return -1;
+ }
+
+ if (next_ofs > current_offset)
+ break;
+
+ last_ofs = next_ofs;
+ mxf->current_edit_unit++;
+ }
+
+ /* not checking mxf->current_edit_unit >= t->nb_ptses here since CBR files
+ * may lack IndexEntryArrays */
+ if (mxf->current_edit_unit < 0)
+ return -1;
+
+ return next_ofs;
}
+static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
+{
+ KLVPacket klv;
+ MXFContext *mxf = s->priv_data;
+
+ while (!s->pb->eof_reached) {
+ if (klv_read_packet(&klv, s->pb) < 0)
+ return -1;
+ PRINT_KEY(s, "read packet", klv.key);
+ av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
+ if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
+ int res = mxf_decrypt_triplet(s, pkt, &klv);
+ if (res < 0) {
+ av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
+ return -1;
+ }
+ return 0;
+ }
+ if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
+ IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
+ int index = mxf_get_stream_index(s, &klv);
+ int64_t next_ofs, next_klv;
+ AVStream *st;
+ MXFTrack *track;
+
+ if (index < 0) {
+ av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
+ goto skip;
+ }
+
+ st = s->streams[index];
+ track = st->priv_data;
+
+ if (s->streams[index]->discard == AVDISCARD_ALL)
+ goto skip;
+
+ next_klv = avio_tell(s->pb) + klv.length;
+ next_ofs = mxf_set_current_edit_unit(mxf, klv.offset);
+
+ if (next_ofs >= 0 && next_klv > next_ofs) {
+ /* if this check is hit then it's possible OPAtom was treated
+ * as OP1a truncate the packet since it's probably very large
+ * (>2 GiB is common) */
+ avpriv_request_sample(s,
+ "OPAtom misinterpreted as OP1a?"
+ "KLV for edit unit %i extending into "
+ "next edit unit",
+ mxf->current_edit_unit);
+ klv.length = next_ofs - avio_tell(s->pb);
+ }
+
+ /* check for 8 channels AES3 element */
+ if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
+ if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
+ av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
+ return -1;
+ }
+ } else {
+ int ret = av_get_packet(s->pb, pkt, klv.length);
+ if (ret < 0)
+ return ret;
+ }
+ pkt->stream_index = index;
+ pkt->pos = klv.offset;
+
+ if (s->streams[index]->codec->codec_type == AVMEDIA_TYPE_VIDEO && next_ofs >= 0) {
+ /* mxf->current_edit_unit good - see if we have an
+ * index table to derive timestamps from */
+ MXFIndexTable *t = &mxf->index_tables[0];
+
+ if (mxf->nb_index_tables >= 1 &&
+ mxf->current_edit_unit < t->nb_ptses) {
+ pkt->dts = mxf->current_edit_unit + t->first_dts;
+ pkt->pts = t->ptses[mxf->current_edit_unit];
+ } else if (track->intra_only) {
+ /* intra-only -> PTS = EditUnit.
+ * let utils.c figure out DTS since it can be
+ * < PTS if low_delay = 0 (Sony IMX30) */
+ pkt->pts = mxf->current_edit_unit;
+ }
+ }
+
+ /* seek for truncated packets */
+ avio_seek(s->pb, next_klv, SEEK_SET);
+
+ return 0;
+ } else
+ skip:
+ avio_skip(s->pb, klv.length);
+ }
+ return AVERROR_EOF;
+}
+
+static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ MXFContext *mxf = s->priv_data;
+ int ret, size;
+ int64_t ret64, pos, next_pos;
+ AVStream *st;
+ MXFIndexTable *t;
+ int edit_units;
+
+ if (mxf->op != OPAtom)
+ return mxf_read_packet_old(s, pkt);
+
+ /* OPAtom - clip wrapped demuxing */
+ /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
+ st = s->streams[0];
+ t = &mxf->index_tables[0];
+
+ if (mxf->current_edit_unit >= st->duration)
+ return AVERROR_EOF;
+
+ edit_units = FFMIN(mxf->edit_units_per_packet, st->duration - mxf->current_edit_unit);
+
+ if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, 1)) < 0)
+ return ret;
+
+ /* compute size by finding the next edit unit or the end of the essence container
+ * not pretty, but it works */
+ if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + edit_units, NULL, &next_pos, 0)) < 0 &&
+ (next_pos = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
+ av_log(s, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((size = next_pos - pos) <= 0) {
+ av_log(s, AV_LOG_ERROR, "bad size: %i\n", size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((ret64 = avio_seek(s->pb, pos, SEEK_SET)) < 0)
+ return ret64;
+
+ if ((ret = av_get_packet(s->pb, pkt, size)) != size)
+ return ret < 0 ? ret : AVERROR_EOF;
+
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && t->ptses &&
+ mxf->current_edit_unit >= 0 && mxf->current_edit_unit < t->nb_ptses) {
+ pkt->dts = mxf->current_edit_unit + t->first_dts;
+ pkt->pts = t->ptses[mxf->current_edit_unit];
+ }
+
+ pkt->stream_index = 0;
+ mxf->current_edit_unit += edit_units;
+
+ return 0;
+}
+
+
static int mxf_read_close(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
MXFIndexTableSegment *seg;
- int i, j;
+ int i;
av_freep(&mxf->packages_refs);
break;
case IndexTableSegment:
seg = (MXFIndexTableSegment *)mxf->metadata_sets[i];
- if (seg->slice_count)
- for (j = 0; j < seg->nb_index_entries; j++)
- av_freep(&seg->slice_offset_entries[j]);
- av_freep(&seg->slice);
- av_freep(&seg->element_delta);
av_freep(&seg->temporal_offset_entries);
av_freep(&seg->flag_entries);
av_freep(&seg->stream_offset_entries);
- av_freep(&seg->slice_offset_entries);
break;
default:
break;
av_freep(&mxf->metadata_sets);
av_freep(&mxf->aesc);
av_freep(&mxf->local_tags);
+
+ for (i = 0; i < mxf->nb_index_tables; i++) {
+ av_freep(&mxf->index_tables[i].segments);
+ av_freep(&mxf->index_tables[i].ptses);
+ av_freep(&mxf->index_tables[i].fake_index);
+ }
+ av_freep(&mxf->index_tables);
+
return 0;
}
{
AVStream *st = s->streams[stream_index];
int64_t seconds;
+ MXFContext* mxf = s->priv_data;
+ int64_t seekpos;
int ret;
+ MXFIndexTable *t;
+ if (mxf->nb_index_tables <= 0) {
if (!s->bit_rate)
return AVERROR_INVALIDDATA;
if (sample_time < 0)
if ((ret = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET)) < 0)
return ret;
ff_update_cur_dts(s, st, sample_time);
+ } else {
+ t = &mxf->index_tables[0];
+
+ /* clamp above zero, else ff_index_search_timestamp() returns negative
+ * this also means we allow seeking before the start */
+ sample_time = FFMAX(sample_time, 0);
+
+ if (t->fake_index) {
+ /* behave as if we have a proper index */
+ if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
+ return sample_time;
+ } else {
+ /* no IndexEntryArray (one or more CBR segments)
+ * make sure we don't seek past the end */
+ sample_time = FFMIN(sample_time, st->duration - 1);
+ }
+
+ if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, 1)) << 0)
+ return ret;
+
+ ff_update_cur_dts(s, st, sample_time);
+ mxf->current_edit_unit = sample_time;
+ avio_seek(s->pb, seekpos, SEEK_SET);
+ }
return 0;
}
AVInputFormat ff_mxf_demuxer = {
.name = "mxf",
- .long_name = NULL_IF_CONFIG_SMALL("Material eXchange Format"),
+ .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
.priv_data_size = sizeof(MXFContext),
.read_probe = mxf_probe,
.read_header = mxf_read_header,
projects / ffmpeg / blobdiff