#include "libavutil/intreadwrite.h"
#include "libavutil/parseutils.h"
#include "libavutil/timecode.h"
+#include "libavutil/opt.h"
#include "avformat.h"
#include "internal.h"
#include "mxf.h"
+#define MXF_MAX_CHUNK_SIZE (32 << 20)
+
typedef enum {
Header,
BodyPartition,
} MXFIndexTable;
typedef struct MXFContext {
+ const AVClass *class; /**< Class for private options. */
MXFPartition *partitions;
unsigned partitions_count;
MXFOP op;
int local_tags_count;
uint64_t footer_partition;
KLVPacket current_klv_data;
- int current_klv_index;
int run_in;
MXFPartition *current_partition;
int parsing_backward;
int64_t last_forward_tell;
int last_forward_partition;
- int64_t current_edit_unit;
int nb_index_tables;
MXFIndexTable *index_tables;
+ int eia608_extract;
} MXFContext;
/* NOTE: klv_offset is not set (-1) for local keys */
return i;
}
/* return 0 if only one stream, for OP Atom files with 0 as track number */
- return s->nb_streams == 1 ? 0 : -1;
+ return s->nb_streams == 1 && s->streams[0]->priv_data ? 0 : -1;
}
static int find_body_sid_by_offset(MXFContext *mxf, int64_t offset)
return mxf->partitions[a].body_sid;
}
+static int mxf_get_eia608_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt, int64_t length)
+{
+ int count = avio_rb16(s->pb);
+ int cdp_identifier, cdp_length, cdp_footer_id, ccdata_id, cc_count;
+ int line_num, sample_coding, sample_count;
+ int did, sdid, data_length;
+ int i, ret;
+
+ if (count != 1)
+ av_log(s, AV_LOG_WARNING, "unsupported multiple ANC packets (%d) per KLV packet\n", count);
+
+ for (i = 0; i < count; i++) {
+ if (length < 6) {
+ av_log(s, AV_LOG_ERROR, "error reading s436m packet %"PRId64"\n", length);
+ return AVERROR_INVALIDDATA;
+ }
+ line_num = avio_rb16(s->pb);
+ avio_r8(s->pb); // wrapping type
+ sample_coding = avio_r8(s->pb);
+ sample_count = avio_rb16(s->pb);
+ length -= 6 + 8 + sample_count;
+ if (line_num != 9 && line_num != 11)
+ continue;
+ if (sample_coding == 7 || sample_coding == 8 || sample_coding == 9) {
+ av_log(s, AV_LOG_WARNING, "unsupported s436m 10 bit sample coding\n");
+ continue;
+ }
+ if (length < 0)
+ return AVERROR_INVALIDDATA;
+
+ avio_rb32(s->pb); // array count
+ avio_rb32(s->pb); // array elem size
+ did = avio_r8(s->pb);
+ sdid = avio_r8(s->pb);
+ data_length = avio_r8(s->pb);
+ if (did != 0x61 || sdid != 1) {
+ av_log(s, AV_LOG_WARNING, "unsupported did or sdid: %x %x\n", did, sdid);
+ continue;
+ }
+ cdp_identifier = avio_rb16(s->pb); // cdp id
+ if (cdp_identifier != 0x9669) {
+ av_log(s, AV_LOG_ERROR, "wrong cdp identifier %x\n", cdp_identifier);
+ return AVERROR_INVALIDDATA;
+ }
+ cdp_length = avio_r8(s->pb);
+ avio_r8(s->pb); // cdp_frame_rate
+ avio_r8(s->pb); // cdp_flags
+ avio_rb16(s->pb); // cdp_hdr_sequence_cntr
+ ccdata_id = avio_r8(s->pb); // ccdata_id
+ if (ccdata_id != 0x72) {
+ av_log(s, AV_LOG_ERROR, "wrong cdp data section %x\n", ccdata_id);
+ return AVERROR_INVALIDDATA;
+ }
+ cc_count = avio_r8(s->pb) & 0x1f;
+ ret = av_get_packet(s->pb, pkt, cc_count * 3);
+ if (ret < 0)
+ return ret;
+ if (cdp_length - 9 - 4 < cc_count * 3) {
+ av_log(s, AV_LOG_ERROR, "wrong cdp size %d cc count %d\n", cdp_length, cc_count);
+ return AVERROR_INVALIDDATA;
+ }
+ avio_skip(s->pb, data_length - 9 - 4 - cc_count * 3);
+ cdp_footer_id = avio_r8(s->pb);
+ if (cdp_footer_id != 0x74) {
+ av_log(s, AV_LOG_ERROR, "wrong cdp footer section %x\n", cdp_footer_id);
+ return AVERROR_INVALIDDATA;
+ }
+ avio_rb16(s->pb); // cdp_ftr_sequence_cntr
+ avio_r8(s->pb); // packet_checksum
+ break;
+ }
+
+ return 0;
+}
+
/* XXX: use AVBitStreamFilter */
static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
{
return AVERROR(ENOMEM);
}
- for (i = j = 0; i < mxf->metadata_sets_count; i++)
- if (mxf->metadata_sets[i]->type == IndexTableSegment)
- unsorted_segments[j++] = (MXFIndexTableSegment*)mxf->metadata_sets[i];
+ for (i = nb_segments = 0; i < mxf->metadata_sets_count; i++) {
+ if (mxf->metadata_sets[i]->type == IndexTableSegment) {
+ MXFIndexTableSegment *s = (MXFIndexTableSegment*)mxf->metadata_sets[i];
+ if (s->edit_unit_byte_count || s->nb_index_entries)
+ unsorted_segments[nb_segments++] = s;
+ else
+ av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
+ s->index_sid, s->index_start_position);
+ }
+ }
+
+ if (!nb_segments) {
+ av_freep(sorted_segments);
+ av_free(unsorted_segments);
+ return AVERROR_INVALIDDATA;
+ }
*nb_sorted_segments = 0;
}
/* 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, MXFPartition **partition_out, int nag)
+static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, AVRational edit_rate, int64_t *edit_unit_out, int64_t *offset_out, MXFPartition **partition_out, int nag)
{
int i;
int64_t offset_temp = 0;
+ edit_unit = av_rescale_q(edit_unit, index_table->segments[0]->index_edit_rate, edit_rate);
+
for (i = 0; i < index_table->nb_segments; i++) {
MXFIndexTableSegment *s = index_table->segments[i];
if (s->edit_unit_byte_count)
offset_temp += s->edit_unit_byte_count * index;
- else if (s->nb_index_entries) {
+ else {
if (s->nb_index_entries == 2 * s->index_duration + 1)
index *= 2; /* Avid index */
}
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 (edit_unit_out)
- *edit_unit_out = edit_unit;
+ *edit_unit_out = av_rescale_q(edit_unit, edit_rate, s->index_edit_rate);
return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out, partition_out);
} else {
return 0; /* no TemporalOffsets */
}
+ if (s->index_duration > INT_MAX - index_table->nb_ptses) {
+ index_table->nb_ptses = 0;
+ av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration is too large\n", s->index_sid);
+ return 0;
+ }
+
index_table->nb_ptses += s->index_duration;
}
/* fix zero IndexDurations */
for (k = 0; k < t->nb_segments; k++) {
+ if (!t->segments[k]->index_edit_rate.num || !t->segments[k]->index_edit_rate.den) {
+ av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has invalid IndexEditRate\n",
+ t->index_sid, k);
+ if (mxf_track)
+ t->segments[k]->index_edit_rate = mxf_track->edit_rate;
+ }
+
if (t->segments[k]->index_duration)
continue;
continue;
}
- if (physical_track->edit_rate.num <= 0 ||
- physical_track->edit_rate.den <= 0) {
- av_log(mxf->fc, AV_LOG_WARNING,
- "Invalid edit rate (%d/%d) found on structural"
- " component #%d, defaulting to 25/1\n",
- physical_track->edit_rate.num,
- physical_track->edit_rate.den, i);
- physical_track->edit_rate = (AVRational){25, 1};
- }
+ if (physical_track->edit_rate.num <= 0 ||
+ physical_track->edit_rate.den <= 0) {
+ av_log(mxf->fc, AV_LOG_WARNING,
+ "Invalid edit rate (%d/%d) found on structural"
+ " component #%d, defaulting to 25/1\n",
+ physical_track->edit_rate.num,
+ physical_track->edit_rate.den, i);
+ physical_track->edit_rate = (AVRational){25, 1};
+ }
for (k = 0; k < physical_track->sequence->structural_components_count; k++) {
if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k])))
MXFEssenceContainerData *essence_data;
if (!(essence_data = mxf_resolve_strong_ref(mxf, &mxf->essence_container_data_refs[k], EssenceContainerData))) {
- av_log(mxf, AV_LOG_TRACE, "could not resolve essence container data strong ref\n");
+ av_log(mxf->fc, AV_LOG_TRACE, "could not resolve essence container data strong ref\n");
continue;
}
if (!memcmp(component->source_package_ul, essence_data->package_ul, sizeof(UID)) && !memcmp(component->source_package_uid, essence_data->package_uid, sizeof(UID))) {
default:
av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout);
}
+
+ if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
+ switch (descriptor->essence_codec_ul[14]) {
+ case 1: st->codecpar->codec_tag = MKTAG('a','p','c','o'); break;
+ case 2: st->codecpar->codec_tag = MKTAG('a','p','c','s'); break;
+ case 3: st->codecpar->codec_tag = MKTAG('a','p','c','n'); break;
+ case 4: st->codecpar->codec_tag = MKTAG('a','p','c','h'); break;
+ case 5: st->codecpar->codec_tag = MKTAG('a','p','4','h'); break;
+ case 6: st->codecpar->codec_tag = MKTAG('a','p','4','x'); break;
+ }
+ }
+
if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) {
st->codecpar->format = descriptor->pix_fmt;
if (st->codecpar->format == AV_PIX_FMT_NONE) {
if (st->codecpar->codec_id == AV_CODEC_ID_NONE || (st->codecpar->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE))
st->codecpar->codec_id = (enum AVCodecID)container_ul->id;
st->codecpar->channels = descriptor->channels;
- st->codecpar->bits_per_coded_sample = descriptor->bits_per_sample;
if (descriptor->sample_rate.den > 0) {
st->codecpar->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
} else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
st->need_parsing = AVSTREAM_PARSE_FULL;
}
+ st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
enum AVMediaType type;
container_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul);
st->codecpar->codec_type = type;
if (container_ul->desc)
av_dict_set(&st->metadata, "data_type", container_ul->desc, 0);
+ if (mxf->eia608_extract &&
+ !strcmp(container_ul->desc, "vbi_vanc_smpte_436M")) {
+ st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
+ st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
+ }
}
if (descriptor->extradata) {
if (!ff_alloc_extradata(st->codecpar, descriptor->extradata_size)) {
if (ret < 0)
return ret;
}
- if (st->codecpar->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
+ if (st->codecpar->codec_type != AVMEDIA_TYPE_DATA && source_track->wrapping != FrameWrapped) {
/* TODO: decode timestamps */
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
}
#define SET_TS_METADATA(pb, name, var, str) do { \
var = avio_rb64(pb); \
- if ((ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var)) < 0)) \
+ if ((ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var))) < 0) \
return ret; \
} while (0)
if (ctx_size && tag == 0x3C0A) {
avio_read(pb, ctx->uid, 16);
} else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) {
- mxf_free_metadataset(&ctx, !!ctx_size);
+ if (ctx_size)
+ mxf_free_metadataset(&ctx, 1);
return ret;
}
if (avio_tell(pb) > klv_end) {
if (ctx_size) {
ctx->type = type;
- mxf_free_metadataset(&ctx, !!ctx_size);
+ mxf_free_metadataset(&ctx, 1);
}
av_log(mxf->fc, AV_LOG_ERROR,
return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
}
-static AVStream* mxf_get_opatom_stream(MXFContext *mxf)
-{
- int i;
-
- if (mxf->op != OPAtom)
- return NULL;
-
- for (i = 0; i < mxf->fc->nb_streams; i++) {
- if (mxf->fc->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA)
- continue;
- return mxf->fc->streams[i];
- }
- return NULL;
-}
-
static MXFIndexTable *mxf_find_index_table(MXFContext *mxf, int index_sid)
{
int i;
MXFIndexTableSegment *segment = NULL;
MXFPartition *p = NULL;
int essence_partition_count = 0;
+ int edit_unit_byte_count = 0;
int i, ret;
- /* TODO: support raw video without an index if they exist */
- if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || !is_pcm(st->codecpar->codec_id) || track->wrapping != ClipWrapped)
+ if (!track || track->wrapping != ClipWrapped)
return 0;
/* check if track already has an IndexTableSegment */
if (essence_partition_count != 1)
return 0;
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && is_pcm(st->codecpar->codec_id)) {
+ edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
+ } else if (st->duration > 0 && p->first_essence_klv.length > 0 && p->first_essence_klv.length % st->duration == 0) {
+ edit_unit_byte_count = p->first_essence_klv.length / st->duration;
+ }
+
+ if (edit_unit_byte_count <= 0)
+ return 0;
+
+ av_log(mxf->fc, AV_LOG_WARNING, "guessing index for stream %d using edit unit byte count %d\n", st->index, edit_unit_byte_count);
+
if (!(segment = av_mallocz(sizeof(*segment))))
return AVERROR(ENOMEM);
* using the same SID for index is forbidden in MXF. */
if (!track->index_sid)
track->index_sid = track->body_sid;
- track->edit_rate = av_inv_q(st->time_base);
segment->type = IndexTableSegment;
/* stream will be treated as small EditUnitByteCount */
- segment->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
+ segment->edit_unit_byte_count = edit_unit_byte_count;
segment->index_start_position = 0;
segment->index_duration = st->duration;
- segment->index_edit_rate = track->edit_rate;
+ segment->index_edit_rate = av_inv_q(st->time_base);
segment->index_sid = track->index_sid;
segment->body_sid = p->body_sid;
return 0;
/* 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) {
+ } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom && (s->error_recognition & AV_EF_EXPLODE)) {
av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
ret = AVERROR_INVALIDDATA;
goto fail;
while (b - a > 1) {
m = (a + b) >> 1;
- if (mxf_edit_unit_absolute_offset(mxf, t, m, NULL, &offset, NULL, 0) < 0)
+ if (mxf_edit_unit_absolute_offset(mxf, t, m, track->edit_rate, NULL, &offset, NULL, 0) < 0)
return -1;
if (offset < current_offset)
a = m;
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, NULL, 0) < 0)
- return -2;
-
- 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_compute_sample_count(MXFContext *mxf, int stream_index,
- int64_t edit_unit, uint64_t *sample_count)
+static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st,
+ int64_t edit_unit)
{
int i, total = 0, size = 0;
- AVStream *st = mxf->fc->streams[stream_index];
MXFTrack *track = st->priv_data;
AVRational time_base = av_inv_q(track->edit_rate);
AVRational sample_rate = av_inv_q(st->time_base);
const MXFSamplesPerFrame *spf = NULL;
+ int64_t sample_count;
+
+ // For non-audio sample_count equals current edit unit
+ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
+ return edit_unit;
if ((sample_rate.num / sample_rate.den) == 48000)
spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base);
if (!spf) {
int remainder = (sample_rate.num * time_base.num) %
(time_base.den * sample_rate.den);
- *sample_count = av_rescale_q(edit_unit, sample_rate, track->edit_rate);
if (remainder)
av_log(mxf->fc, AV_LOG_WARNING,
"seeking detected on stream #%d with time base (%d/%d) and "
"sample rate (%d/%d), audio pts won't be accurate.\n",
- stream_index, time_base.num, time_base.den,
+ st->index, time_base.num, time_base.den,
sample_rate.num, sample_rate.den);
- return 0;
+ return av_rescale_q(edit_unit, sample_rate, track->edit_rate);
}
while (spf->samples_per_frame[size]) {
av_assert2(size);
- *sample_count = (edit_unit / size) * (uint64_t)total;
+ sample_count = (edit_unit / size) * (uint64_t)total;
for (i = 0; i < edit_unit % size; i++) {
- *sample_count += spf->samples_per_frame[i];
+ sample_count += spf->samples_per_frame[i];
}
- return 0;
+ return sample_count;
+}
+
+/**
+ * Make sure track->sample_count is correct based on what offset we're currently at.
+ * Also determine the next edit unit (or packet) offset.
+ * @return next_ofs if OK, <0 on error
+ */
+static int64_t mxf_set_current_edit_unit(MXFContext *mxf, AVStream *st, int64_t current_offset, int resync)
+{
+ int64_t next_ofs = -1;
+ MXFTrack *track = st->priv_data;
+ int64_t edit_unit = av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate));
+ int64_t new_edit_unit;
+ MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
+
+ if (!t || track->wrapping == UnknownWrapped)
+ return -1;
+
+ if (mxf_edit_unit_absolute_offset(mxf, t, edit_unit + track->edit_units_per_packet, track->edit_rate, NULL, &next_ofs, NULL, 0) < 0 &&
+ (next_ofs = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
+ av_log(mxf->fc, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
+ return -1;
+ }
+
+ /* check if the next edit unit offset (next_ofs) starts ahead of current_offset */
+ if (next_ofs > current_offset)
+ return next_ofs;
+
+ if (!resync) {
+ av_log(mxf->fc, AV_LOG_ERROR, "cannot find current edit unit for stream %d, invalid index?\n", st->index);
+ return -1;
+ }
+
+ if (mxf_get_next_track_edit_unit(mxf, track, current_offset + 1, &new_edit_unit) < 0 || new_edit_unit <= 0) {
+ av_log(mxf->fc, AV_LOG_ERROR, "failed to find next track edit unit in stream %d\n", st->index);
+ return -1;
+ }
+
+ new_edit_unit--;
+ track->sample_count = mxf_compute_sample_count(mxf, st, new_edit_unit);
+ av_log(mxf->fc, AV_LOG_WARNING, "edit unit sync lost on stream %d, jumping from %"PRId64" to %"PRId64"\n", st->index, edit_unit, new_edit_unit);
+
+ return mxf_set_current_edit_unit(mxf, st, current_offset, 0);
}
static int mxf_set_audio_pts(MXFContext *mxf, AVCodecParameters *par,
AVPacket *pkt)
{
- MXFTrack *track = mxf->fc->streams[pkt->stream_index]->priv_data;
+ AVStream *st = mxf->fc->streams[pkt->stream_index];
+ MXFTrack *track = st->priv_data;
int64_t bits_per_sample = par->bits_per_coded_sample;
if (!bits_per_sample)
if ( par->channels <= 0
|| bits_per_sample <= 0
|| par->channels * (int64_t)bits_per_sample < 8)
- return AVERROR(EINVAL);
- track->sample_count += pkt->size / (par->channels * (int64_t)bits_per_sample / 8);
+ track->sample_count = mxf_compute_sample_count(mxf, st, av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate)) + 1);
+ else
+ track->sample_count += pkt->size / (par->channels * (int64_t)bits_per_sample / 8);
+
return 0;
}
-static int mxf_set_pts(MXFContext *mxf, AVStream *st, AVPacket *pkt, int64_t next_ofs)
+static int mxf_set_pts(MXFContext *mxf, AVStream *st, AVPacket *pkt)
{
AVCodecParameters *par = st->codecpar;
MXFTrack *track = st->priv_data;
- if (par->codec_type == AVMEDIA_TYPE_VIDEO && (next_ofs >= 0 || next_ofs == -2 && st->duration == mxf->current_edit_unit + 1)) {
- /* mxf->current_edit_unit good - see if we have an
- * index table to derive timestamps from */
- MXFIndexTable *t = &mxf->index_tables[0];
+ if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
+ /* see if we have an index table to derive timestamps from */
+ MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
- 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];
+ if (t && track->sample_count < t->nb_ptses) {
+ pkt->dts = track->sample_count + t->first_dts;
+ pkt->pts = t->ptses[track->sample_count];
} 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;
+ pkt->pts = track->sample_count;
}
+ track->sample_count++;
} else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
int ret = mxf_set_audio_pts(mxf, par, pkt);
if (ret < 0)
return ret;
+ } else if (track) {
+ pkt->dts = pkt->pts = track->sample_count;
+ pkt->duration = 1;
+ track->sample_count++;
}
return 0;
}
-static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
+static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
KLVPacket klv;
MXFContext *mxf = s->priv_data;
int ret;
- while ((ret = klv_read_packet(&klv, s->pb)) == 0) {
- PRINT_KEY(s, "read packet", klv.key);
- av_log(s, AV_LOG_TRACE, "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 ret;
+ while (1) {
+ int64_t max_data_size;
+ int64_t pos = avio_tell(s->pb);
+
+ if (pos < mxf->current_klv_data.next_klv - mxf->current_klv_data.length || pos >= mxf->current_klv_data.next_klv) {
+ mxf->current_klv_data = (KLVPacket){{0}};
+ ret = klv_read_packet(&klv, s->pb);
+ if (ret < 0)
+ break;
+ max_data_size = klv.length;
+ pos = klv.next_klv - klv.length;
+ PRINT_KEY(s, "read packet", klv.key);
+ av_log(s, AV_LOG_TRACE, "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 ret;
+ }
+ return 0;
}
- return 0;
+ } else {
+ klv = mxf->current_klv_data;
+ max_data_size = klv.next_klv - pos;
}
if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) ||
int index = mxf_get_stream_index(s, &klv, body_sid);
int64_t next_ofs;
AVStream *st;
+ MXFTrack *track;
if (index < 0) {
av_log(s, AV_LOG_ERROR,
}
st = s->streams[index];
+ track = st->priv_data;
if (s->streams[index]->discard == AVDISCARD_ALL)
goto skip;
- next_ofs = mxf_set_current_edit_unit(mxf, klv.offset);
-
- if (next_ofs >= 0 && klv.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 %"PRId64" extending into "
- "next edit unit",
- mxf->current_edit_unit);
- klv.length = next_ofs - avio_tell(s->pb);
+ next_ofs = mxf_set_current_edit_unit(mxf, st, pos, 1);
+
+ if (track->wrapping != FrameWrapped) {
+ int64_t size;
+
+ if (next_ofs <= 0) {
+ // If we have no way to packetize the data, then return it in chunks...
+ if (klv.next_klv - klv.length == pos && max_data_size > MXF_MAX_CHUNK_SIZE) {
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ avpriv_request_sample(s, "Huge KLV without proper index in non-frame wrapped essence");
+ }
+ size = FFMIN(max_data_size, MXF_MAX_CHUNK_SIZE);
+ } else {
+ if ((size = next_ofs - pos) <= 0) {
+ av_log(s, AV_LOG_ERROR, "bad size: %"PRId64"\n", size);
+ ret = AVERROR_INVALIDDATA;
+ goto skip;
+ }
+ // We must not overread, because the next edit unit might be in another KLV
+ if (size > max_data_size)
+ size = max_data_size;
+ }
+
+ mxf->current_klv_data = klv;
+ klv.offset = pos;
+ klv.length = size;
+ klv.next_klv = klv.offset + klv.length;
}
/* check for 8 channels AES3 element */
pkt, klv.length);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
+ mxf->current_klv_data = (KLVPacket){{0}};
+ return ret;
+ }
+ } else if (mxf->eia608_extract &&
+ s->streams[index]->codecpar->codec_id == AV_CODEC_ID_EIA_608) {
+ ret = mxf_get_eia608_packet(s, s->streams[index], pkt, klv.length);
+ if (ret < 0) {
+ mxf->current_klv_data = (KLVPacket){{0}};
return ret;
}
} else {
ret = av_get_packet(s->pb, pkt, klv.length);
- if (ret < 0)
+ if (ret < 0) {
+ mxf->current_klv_data = (KLVPacket){{0}};
return ret;
+ }
}
pkt->stream_index = index;
pkt->pos = klv.offset;
- ret = mxf_set_pts(mxf, st, pkt, next_ofs);
- if (ret < 0)
+ ret = mxf_set_pts(mxf, st, pkt);
+ if (ret < 0) {
+ mxf->current_klv_data = (KLVPacket){{0}};
return ret;
+ }
/* seek for truncated packets */
avio_seek(s->pb, klv.next_klv, SEEK_SET);
return 0;
- } else
+ } else {
skip:
- avio_skip(s->pb, klv.length);
+ avio_skip(s->pb, max_data_size);
+ mxf->current_klv_data = (KLVPacket){{0}};
+ }
}
return avio_feof(s->pb) ? AVERROR_EOF : ret;
}
-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;
- MXFTrack *track;
- int edit_units;
-
- if (mxf->op != OPAtom)
- return mxf_read_packet_old(s, pkt);
-
- // If we have no streams then we basically are at EOF
- st = mxf_get_opatom_stream(mxf);
- if (!st)
- return AVERROR_EOF;
-
- track = st->priv_data;
-
- /* OPAtom - clip wrapped demuxing */
- /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
- t = &mxf->index_tables[0];
-
- if (mxf->current_edit_unit >= track->original_duration)
- return AVERROR_EOF;
-
- edit_units = FFMIN(track->edit_units_per_packet, track->original_duration - mxf->current_edit_unit);
-
- if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, NULL, 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, NULL, 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 ((size = av_get_packet(s->pb, pkt, size)) < 0)
- return size;
-
- pkt->stream_index = st->index;
-
- ret = mxf_set_pts(mxf, st, pkt, next_pos);
- if (ret < 0)
- return ret;
-
- mxf->current_edit_unit += edit_units;
-
- return 0;
-}
-
static int mxf_read_close(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
return seekpos;
ff_update_cur_dts(s, st, sample_time);
- mxf->current_edit_unit = sample_time;
+ mxf->current_klv_data = (KLVPacket){{0}};
} else {
+ MXFPartition *partition;
+
t = &mxf->index_tables[0];
if (t->index_sid != source_track->index_sid) {
/* If the first index table does not belong to the stream, then find a stream which does belong to the index table */
sample_time = FFMIN(sample_time, source_track->original_duration - 1);
}
- if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, NULL, 1)) < 0)
+ if (source_track->wrapping == UnknownWrapped)
+ av_log(mxf->fc, AV_LOG_WARNING, "attempted seek in an UnknownWrapped essence\n");
+
+ if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, source_track->edit_rate, &sample_time, &seekpos, &partition, 1)) < 0)
return ret;
ff_update_cur_dts(s, st, sample_time);
- mxf->current_edit_unit = sample_time;
+ if (source_track->wrapping == ClipWrapped) {
+ KLVPacket klv = partition->first_essence_klv;
+ if (seekpos < klv.next_klv - klv.length || seekpos >= klv.next_klv) {
+ av_log(mxf->fc, AV_LOG_ERROR, "attempted seek out of clip wrapped KLV\n");
+ return AVERROR_INVALIDDATA;
+ }
+ mxf->current_klv_data = klv;
+ } else {
+ mxf->current_klv_data = (KLVPacket){{0}};
+ }
avio_seek(s->pb, seekpos, SEEK_SET);
}
for (i = 0; i < s->nb_streams; i++) {
AVStream *cur_st = s->streams[i];
MXFTrack *cur_track = cur_st->priv_data;
- if (cur_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
- int64_t track_edit_unit;
- if (st != cur_st && mxf_get_next_track_edit_unit(mxf, cur_track, seekpos, &track_edit_unit) >= 0) {
- cur_track->sample_count = av_rescale_q(track_edit_unit,
- av_inv_q(cur_track->edit_rate),
- cur_st->time_base);
- } else {
- uint64_t current_sample_count = 0;
- ret = mxf_compute_sample_count(mxf, i, sample_time, ¤t_sample_count);
- if (ret < 0)
- return ret;
- cur_track->sample_count = current_sample_count;
- }
+ if (cur_track) {
+ int64_t track_edit_unit = sample_time;
+ if (st != cur_st)
+ mxf_get_next_track_edit_unit(mxf, cur_track, seekpos, &track_edit_unit);
+ cur_track->sample_count = mxf_compute_sample_count(mxf, cur_st, track_edit_unit);
}
}
return 0;
}
+static const AVOption options[] = {
+ { "eia608_extract", "extract eia 608 captions from s436m track",
+ offsetof(MXFContext, eia608_extract), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,
+ AV_OPT_FLAG_DECODING_PARAM },
+ { NULL },
+};
+
+static const AVClass demuxer_class = {
+ .class_name = "mxf",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+ .category = AV_CLASS_CATEGORY_DEMUXER,
+};
+
AVInputFormat ff_mxf_demuxer = {
.name = "mxf",
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
.read_packet = mxf_read_packet,
.read_close = mxf_read_close,
.read_seek = mxf_read_seek,
+ .priv_class = &demuxer_class,
};
projects / ffmpeg / blobdiff