#include <math.h>
#include <time.h>
+#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavcodec/bytestream.h"
+#include "libavcodec/timecode.h"
#include "audiointerleave.h"
#include "avformat.h"
+#include "internal.h"
#include "mxf.h"
static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
};
typedef struct MXFContext {
+ AVClass *av_class;
int64_t footer_partition_offset;
int essence_container_count;
AVRational time_base;
unsigned body_partitions_count;
int last_key_index; ///< index of last key frame
uint64_t duration;
+ struct ff_timecode tc;
AVStream *timecode_track;
int timecode_base; ///< rounded time code base (25 or 30)
- int timecode_start; ///< frame number computed from mpeg-2 gop header timecode
- int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
int edit_unit_byte_count; ///< fixed edit unit byte count
uint64_t body_offset;
uint32_t instance_number;
// Start Time Code
mxf_write_local_tag(pb, 8, 0x1501);
- avio_wb64(pb, mxf->timecode_start);
+ avio_wb64(pb, mxf->tc.start);
// Rounded Time Code Base
mxf_write_local_tag(pb, 2, 0x1502);
// Drop Frame
mxf_write_local_tag(pb, 1, 0x1503);
- avio_w8(pb, mxf->timecode_drop_frame);
+ avio_w8(pb, mxf->tc.drop);
}
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
+ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
+ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
};
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
return &mxf_mpeg2_codec_uls[0+long_gop];
else if (avctx->level == 4) // High
return &mxf_mpeg2_codec_uls[4+long_gop];
+ else if (avctx->level == 6) // High 14
+ return &mxf_mpeg2_codec_uls[8+long_gop];
} else if (avctx->profile == 0) { // 422
if (avctx->level == 5) // Main
return &mxf_mpeg2_codec_uls[2+long_gop];
AVPacket *pkt, MXFIndexEntry *e)
{
MXFStreamContext *sc = st->priv_data;
- MXFContext *mxf = s->priv_data;
uint32_t c = -1;
int i;
if (e->flags & 0x40) // sequence header present
e->flags |= 0x80; // random access
}
- if (!mxf->header_written) {
- unsigned hours = (pkt->data[i+1]>>2) & 0x1f;
- unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
- unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
- unsigned frames = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
- mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
- mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
- mxf->timecode_base + frames;
- if (mxf->timecode_drop_frame) {
- unsigned tminutes = 60 * hours + minutes;
- mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
- }
- av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
- hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
- }
} else if (c == 0x1b3) { // seq
e->flags |= 0x40;
switch ((pkt->data[i+4]>>4) & 0xf) {
int i;
uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
const int *samples_per_frame = NULL;
+ AVDictionaryEntry *t;
+ int64_t timestamp = 0;
if (!s->nb_streams)
return -1;
return -1;
}
av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
+ if (mxf->tc.str) {
+ mxf->tc.rate.num = mxf->time_base.den;
+ mxf->tc.rate.den = mxf->time_base.num;
+ if (ff_init_smtpe_timecode(s, &mxf->tc) < 0)
+ return -1;
+ }
if (s->oformat == &ff_mxf_d10_muxer) {
if (st->codec->bit_rate == 50000000)
if (mxf->time_base.den == 25) sc->index = 3;
sc->order = AV_RB32(sc->track_essence_element_key+12);
}
+#if FF_API_TIMESTAMP
if (s->timestamp)
- mxf->timestamp = mxf_parse_timestamp(s->timestamp);
+ timestamp = s->timestamp;
+ else
+#endif
+ if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
+ timestamp = ff_iso8601_to_unix_time(t->value);
+ if (timestamp)
+ mxf->timestamp = mxf_parse_timestamp(timestamp);
mxf->duration = -1;
mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };
-static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
-{
- return (0 << 31) | // color frame flag
- (drop << 30) | // drop frame flag
- ( ((frame % fps) / 10) << 28) | // tens of frames
- ( ((frame % fps) % 10) << 24) | // units of frames
- (0 << 23) | // field phase (NTSC), b0 (PAL)
- ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
- ((((frame / fps) % 60) % 10) << 16) | // units of seconds
- (0 << 15) | // b0 (NTSC), b2 (PAL)
- ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
- ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
- (0 << 7) | // b1
- (0 << 6) | // b2 (NTSC), field phase (PAL)
- ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
- ( (frame / (fps * 3600) % 24)) % 10; // units of hours
-}
-
static void mxf_write_system_item(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
unsigned frame;
uint32_t time_code;
- frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
+ frame = mxf->tc.start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
// write system metadata pack
avio_write(pb, system_metadata_pack_key, 16);
avio_wb64(pb, 0); // creation date/time stamp
avio_w8(pb, 0x81); // SMPTE 12M time code
- time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
+ time_code = frame;
+ if (mxf->tc.drop)
+ time_code = ff_framenum_to_drop_timecode(time_code);
+ time_code = ff_framenum_to_smtpe_timecode(time_code, mxf->timecode_base,
+ mxf->tc.drop);
avio_wb32(pb, time_code);
avio_wb32(pb, 0); // binary group data
avio_wb64(pb, 0);
mxf_interleave_get_packet, mxf_compare_timestamps);
}
+static const AVClass class = {
+ .class_name = "mxf",
+ .item_name = av_default_item_name,
+ .version = LIBAVUTIL_VERSION_INT,
+ .option = (const AVOption[]){
+ {TIMECODE_OPT(MXFContext, AV_OPT_FLAG_ENCODING_PARAM)},
+ {NULL}
+ },
+};
+
AVOutputFormat ff_mxf_muxer = {
- "mxf",
- NULL_IF_CONFIG_SMALL("Material eXchange Format"),
- "application/mxf",
- "mxf",
- sizeof(MXFContext),
- CODEC_ID_PCM_S16LE,
- CODEC_ID_MPEG2VIDEO,
- mxf_write_header,
- mxf_write_packet,
- mxf_write_footer,
- AVFMT_NOTIMESTAMPS,
- NULL,
- mxf_interleave,
+ .name = "mxf",
+ .long_name = NULL_IF_CONFIG_SMALL("Material eXchange Format"),
+ .mime_type = "application/mxf",
+ .extensions = "mxf",
+ .priv_data_size = sizeof(MXFContext),
+ .audio_codec = CODEC_ID_PCM_S16LE,
+ .video_codec = CODEC_ID_MPEG2VIDEO,
+ .write_header = mxf_write_header,
+ .write_packet = mxf_write_packet,
+ .write_trailer = mxf_write_footer,
+ .flags = AVFMT_NOTIMESTAMPS,
+ .interleave_packet = mxf_interleave,
+ .priv_class = &class,
};
AVOutputFormat ff_mxf_d10_muxer = {
- "mxf_d10",
- NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
- "application/mxf",
- NULL,
- sizeof(MXFContext),
- CODEC_ID_PCM_S16LE,
- CODEC_ID_MPEG2VIDEO,
- mxf_write_header,
- mxf_write_packet,
- mxf_write_footer,
- AVFMT_NOTIMESTAMPS,
- NULL,
- mxf_interleave,
+ .name = "mxf_d10",
+ .long_name = NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
+ .mime_type = "application/mxf",
+ .priv_data_size = sizeof(MXFContext),
+ .audio_codec = CODEC_ID_PCM_S16LE,
+ .video_codec = CODEC_ID_MPEG2VIDEO,
+ .write_header = mxf_write_header,
+ .write_packet = mxf_write_packet,
+ .write_trailer = mxf_write_footer,
+ .flags = AVFMT_NOTIMESTAMPS,
+ .interleave_packet = mxf_interleave,
+ .priv_class = &class,
};
projects / ffmpeg / blobdiff