@@ -95,6 +95,10 @@ typedef struct MXFStreamContext {
int video_bit_rate;
int slice_offset;
int frame_size; ///< frame size in bytes
+ int seq_closed_gop; ///< all gops in sequence are closed, used in mpeg-2 descriptor
+ int max_gop; ///< maximum gop size, used by mpeg-2 descriptor
+ int b_picture_count; ///< maximum number of consecutive b pictures, used in mpeg-2 descriptor
+ int low_delay; ///< low delay, used in mpeg-2 descriptor
} MXFStreamContext;
typedef struct MXFContainerEssenceEntry {
@@ -528,7 +532,11 @@ static const MXFLocalTagPair mxf_local_tag_batch[] = {
{ 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
// MPEG video Descriptor
{ 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
+ { 0x8003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x05,0x00,0x00}}, /* LowDelay */
+ { 0x8004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x06,0x00,0x00}}, /* ClosedGOP */
+ { 0x8006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x08,0x00,0x00}}, /* MaxGOP */
{ 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
+ { 0x8008, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x09,0x00,0x00}}, /* BPictureCount */
// Wave Audio Essence Descriptor
{ 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
{ 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
@@ -1264,10 +1272,8 @@ static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID
avio_wb32(pb, sc->h_chroma_sub_sample);
// vertical subsampling
- if (sc->v_chroma_sub_sample) {
- mxf_write_local_tag(pb, 4, 0x3308);
- avio_wb32(pb, sc->v_chroma_sub_sample);
- }
+ mxf_write_local_tag(pb, 4, 0x3308);
+ avio_wb32(pb, sc->v_chroma_sub_sample);
// color siting
mxf_write_local_tag(pb, 1, 0x3303);
@@ -1379,6 +1385,22 @@ static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
if (!st->codecpar->profile)
profile_and_level |= 0x80; // escape bit
avio_w8(pb, profile_and_level);
+
+ // low delay
+ mxf_write_local_tag(pb, 1, 0x8003);
+ avio_w8(pb, sc->low_delay);
+
+ // closed gop
+ mxf_write_local_tag(pb, 1, 0x8004);
+ avio_w8(pb, sc->seq_closed_gop);
+
+ // max gop
+ mxf_write_local_tag(pb, 2, 0x8006);
+ avio_wb16(pb, sc->max_gop);
+
+ // b picture count
+ mxf_write_local_tag(pb, 2, 0x8008);
+ avio_wb16(pb, sc->b_picture_count);
}
mxf_update_klv_size(pb, pos);
@@ -1699,6 +1721,7 @@ static void mxf_write_index_table_segment(AVFormatContext *s)
AVIOContext *pb = s->pb;
int i, j, temporal_reordering = 0;
int key_index = mxf->last_key_index;
+ int prev_non_b_picture = 0;
int64_t pos;
av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
@@ -1777,6 +1800,7 @@ static void mxf_write_index_table_segment(AVFormatContext *s)
}
if (!mxf->edit_unit_byte_count) {
+ MXFStreamContext *sc = s->streams[0]->priv_data;
mxf_write_local_tag(pb, 8 + mxf->edit_units_count*15, 0x3F0A);
avio_wb32(pb, mxf->edit_units_count); // num of entries
avio_wb32(pb, 15); // size of one entry
@@ -1785,6 +1809,7 @@ static void mxf_write_index_table_segment(AVFormatContext *s)
int temporal_offset = 0;
if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
+ sc->max_gop = FFMAX(sc->max_gop, i - mxf->last_key_index);
mxf->last_key_index = key_index;
key_index = i;
}
@@ -1804,11 +1829,13 @@ static void mxf_write_index_table_segment(AVFormatContext *s)
avio_w8(pb, temporal_offset);
if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
+ sc->b_picture_count = FFMAX(sc->b_picture_count, i - prev_non_b_picture);
avio_w8(pb, mxf->last_key_index - i);
} else {
avio_w8(pb, key_index - i); // key frame offset
if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
mxf->last_key_index = key_index;
+ prev_non_b_picture = i;
}
if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
@@ -2234,6 +2261,7 @@ static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
st->codecpar->profile = pkt->data[i+1] & 0x07;
st->codecpar->level = pkt->data[i+2] >> 4;
+ sc->low_delay = pkt->data[i+6] >> 7;
} else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
if (sc->interlaced)
@@ -2242,9 +2270,14 @@ static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
}
} else if (c == 0x1b8) { // gop
if (pkt->data[i+4]>>6 & 0x01) { // closed
+ if (sc->seq_closed_gop == -1)
+ sc->seq_closed_gop = 1;
sc->closed_gop = 1;
if (e->flags & 0x40) // sequence header present
e->flags |= 0x80; // random access
+ } else {
+ sc->seq_closed_gop = 0;
+ sc->closed_gop = 0;
}
} else if (c == 0x1b3) { // seq
e->flags |= 0x40;
@@ -2356,6 +2389,7 @@ static int mxf_write_header(AVFormatContext *s)
// Default component depth to 8
sc->component_depth = 8;
sc->h_chroma_sub_sample = 2;
+ sc->v_chroma_sub_sample = 2;
sc->color_siting = 0xFF;
if (pix_desc) {
@@ -2383,6 +2417,10 @@ static int mxf_write_header(AVFormatContext *s)
if((ret = mxf_init_timecode(s, st, rate)) < 0)
return ret;
+ if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
+ sc->seq_closed_gop = -1; // unknown yet
+ }
+
sc->video_bit_rate = st->codecpar->bit_rate;
if (s->oformat == &ff_mxf_d10_muxer ||
@@ -1,9 +1,9 @@
-96c0f82082eb420ecbddf7810f3b3943 *./tests/data/lavf/lavf.mxf
+eea31259441d909fedb9a0e0eb9bbdb2 *./tests/data/lavf/lavf.mxf
526393 ./tests/data/lavf/lavf.mxf
./tests/data/lavf/lavf.mxf CRC=0x8dddfaab
-4b73c93955f4ae2fcddb2fc99e5e7017 *./tests/data/lavf/lavf.mxf
+2c4a6634f646f7ab76bf2b7e71c8c893 *./tests/data/lavf/lavf.mxf
561721 ./tests/data/lavf/lavf.mxf
./tests/data/lavf/lavf.mxf CRC=0xf21b1b48
-8376d69f7eccfc268041dffd82db1a61 *./tests/data/lavf/lavf.mxf
+e547b44d71cd5871582522a31511ae9c *./tests/data/lavf/lavf.mxf
526393 ./tests/data/lavf/lavf.mxf
./tests/data/lavf/lavf.mxf CRC=0x8dddfaab
@@ -1,3 +1,3 @@
-ad3f0da2f77e5269e896b367f2a5b0b0 *./tests/data/lavf/lavf.mxf_d10
+9f299fd4da6a20ef93adad7fe6a9f481 *./tests/data/lavf/lavf.mxf_d10
5332013 ./tests/data/lavf/lavf.mxf_d10
./tests/data/lavf/lavf.mxf_d10 CRC=0x6c74d488
@@ -1,3 +1,3 @@
-cd1ea9497444b0b43d930b0dc56aecf7 *./tests/data/lavf/lavf.mxf_dv25
+358791c5468c39673239e038fb64a734 *./tests/data/lavf/lavf.mxf_dv25
3834413 ./tests/data/lavf/lavf.mxf_dv25
./tests/data/lavf/lavf.mxf_dv25 CRC=0xbdaf7f52
@@ -1,3 +1,3 @@
-ce601c92f0e2d7f07cbf6263a8a18ea5 *./tests/data/lavf/lavf.mxf_dvcpro50
+fac7c59ea81c752d769335ddaa818f90 *./tests/data/lavf/lavf.mxf_dvcpro50
7431213 ./tests/data/lavf/lavf.mxf_dvcpro50
./tests/data/lavf/lavf.mxf_dvcpro50 CRC=0xe3bbe4b4
@@ -1,3 +1,3 @@
-76093fef1ac42587cc374012dc1945db *./tests/data/lavf/lavf.mxf_opatom
+49b0b3dfeb6a9ec024b047fc627b66fd *./tests/data/lavf/lavf.mxf_opatom
4717625 ./tests/data/lavf/lavf.mxf_opatom
./tests/data/lavf/lavf.mxf_opatom CRC=0xf55aa22a
@@ -1,3 +1,3 @@
-8524f908a6fa8750a4755ab79cc1516c *./tests/data/lavf/lavf.mxf_opatom_audio
+862dc5c9f2c94bd2c545ca64f923d1a1 *./tests/data/lavf/lavf.mxf_opatom_audio
102969 ./tests/data/lavf/lavf.mxf_opatom_audio
./tests/data/lavf/lavf.mxf_opatom_audio CRC=0xd155c6ff