//#define DEBUG
+#include <math.h>
+
#include "libavutil/fifo.h"
#include "mxf.h"
static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
static const int PAL_samples_per_frame[] = { 1920, 0 };
+#define MXF_INDEX_CLUSTER_SIZE 4096
+
typedef struct {
AVFifoBuffer fifo;
unsigned fifo_size; ///< current fifo size allocated
int sample_size; ///< size of one sample all channels included
const int *samples_per_frame; ///< must be 0 terminated
const int *samples; ///< current samples per frame, pointer to samples_per_frame
+ AVRational time_base; ///< time base of output audio packets
} AudioInterleaveContext;
typedef struct {
UID uid;
} MXFLocalTagPair;
+typedef struct {
+ uint8_t flags;
+ uint64_t offset;
+ unsigned slice_offset[17]; // one video, 16 audio
+} MXFIndexEntry;
+
typedef struct {
AudioInterleaveContext aic;
UID track_essence_element_key;
int64_t duration;
int order; ///< interleaving order if dts are equal
int interlaced; ///< wether picture is interlaced
+ int temporal_reordering;
} MXFStreamContext;
typedef struct {
UID container_ul;
UID element_ul;
UID codec_ul;
- enum CodecID id;
void (*write_desc)();
} MXFContainerEssenceEntry;
+static const struct {
+ enum CodecID id;
+ int index;
+} mxf_essence_mappings[] = {
+ { CODEC_ID_MPEG2VIDEO, 0 },
+ { CODEC_ID_PCM_S24LE, 1 },
+ { CODEC_ID_PCM_S16LE, 1 },
+ { 0 }
+};
+
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
{ 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
- CODEC_ID_MPEG2VIDEO, mxf_write_mpegvideo_desc },
+ mxf_write_mpegvideo_desc },
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
- CODEC_ID_PCM_S16LE, mxf_write_aes3_desc },
+ mxf_write_aes3_desc },
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
- CODEC_ID_PCM_S16LE, mxf_write_wav_desc },
+ mxf_write_wav_desc },
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
- CODEC_ID_NONE, NULL },
+ NULL },
};
typedef struct MXFContext {
uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
AVRational time_base;
int header_written;
+ MXFIndexEntry *index_entries;
+ unsigned edit_units_count;
+ int edit_unit_start; ///< index of the stream starting edit unit
} MXFContext;
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
/**
* complete key for operation pattern, partitions, and primer pack
*/
-static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
-static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
-static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
-
-
+static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
+static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
+static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
+static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
+static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
static const uint8_t header_open_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }; // OpenIncomplete
static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
* partial key for header metadata
*/
static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
-
-static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
+static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
/**
* SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
{ 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
{ 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
{ 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
+ { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
+ { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
{ 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
{ 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
// Generic Sound Essence Descriptor
{ 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
{ 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
{ 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
+ // Index Table Segment
+ { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
+ { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
+ { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
+ { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
+ { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
+ { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
+ { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
+ { 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 */
+ // 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 */
};
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
// long form
put_byte(pb, 0x80 + size);
while(size) {
- size --;
+ size--;
put_byte(pb, len >> 8 * size & 0xff);
}
return 0;
static int mxf_get_essence_container_ul_index(enum CodecID id)
{
int i;
- for (i = 0; i < FF_ARRAY_ELEMS(mxf_essence_container_uls); i++)
- if (mxf_essence_container_uls[i].id == id)
- return i;
+ for (i = 0; mxf_essence_mappings[i].id; i++)
+ if (mxf_essence_mappings[i].id == id)
+ return mxf_essence_mappings[i].index;
return -1;
}
mxf_write_uuid(pb, Preface, 0);
PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
- // write create date as unknown
+ // write creation date
mxf_write_local_tag(pb, 8, 0x3B02);
- put_be64(pb, 0);
+ put_be64(pb, s->timestamp);
// write version
mxf_write_local_tag(pb, 2, 0x3B05);
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
{
+ MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
MXFStreamContext *sc = st->priv_data;
put_buffer(pb, sc->track_essence_element_key + 12, 4);
mxf_write_local_tag(pb, 8, 0x4B01);
- put_be32(pb, st->time_base.den);
- put_be32(pb, st->time_base.num);
+ put_be32(pb, mxf->time_base.den);
+ put_be32(pb, mxf->time_base.num);
// write origin
mxf_write_local_tag(pb, 8, 0x4B02);
static void mxf_write_multi_descriptor(AVFormatContext *s)
{
+ MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
int i;
// write sample rate
mxf_write_local_tag(pb, 8, 0x3001);
- put_be32(pb, s->streams[0]->time_base.den);
- put_be32(pb, s->streams[0]->time_base.num);
+ put_be32(pb, mxf->time_base.den);
+ put_be32(pb, mxf->time_base.num);
// write essence container ul
mxf_write_local_tag(pb, 16, 0x3004);
mxf_write_uuid(pb, SubDescriptor, i);
}
-static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key, unsigned size)
+static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
{
+ MXFContext *mxf = s->priv_data;
MXFStreamContext *sc = st->priv_data;
+ ByteIOContext *pb = s->pb;
put_buffer(pb, key, 16);
klv_encode_ber_length(pb, size);
put_be32(pb, st->index);
mxf_write_local_tag(pb, 8, 0x3001);
- put_be32(pb, st->time_base.den);
- put_be32(pb, st->time_base.num);
+ put_be32(pb, mxf->time_base.den);
+ put_be32(pb, mxf->time_base.num);
mxf_write_local_tag(pb, 16, 0x3004);
put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
AVRational dar;
int f1, f2;
- mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 133);
+ mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
mxf_write_local_tag(pb, 4, 0x3203);
put_be32(pb, st->codec->width);
mxf_write_local_tag(pb, 4, 0x3202);
put_be32(pb, stored_height>>sc->interlaced);
+ mxf_write_local_tag(pb, 4, 0x3209);
+ put_be32(pb, st->codec->width);
+
+ mxf_write_local_tag(pb, 4, 0x3208);
+ put_be32(pb, st->codec->height>>sc->interlaced);
+
+ // bit rate
+ mxf_write_local_tag(pb, 4, 0x8000);
+ put_be32(pb, st->codec->bit_rate);
+
// frame layout
mxf_write_local_tag(pb, 1, 0x320C);
put_byte(pb, sc->interlaced);
// video line map
- mxf_write_local_tag(pb, 16, 0x320D);
- put_be32(pb, 2);
- put_be32(pb, 4);
switch (st->codec->height) {
case 576: f1 = 23; f2 = 336; break;
case 608: f1 = 7; f2 = 320; break;
f1 *= 2;
}
+ mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
+ put_be32(pb, sc->interlaced ? 2 : 1);
+ put_be32(pb, 4);
put_be32(pb, f1);
- put_be32(pb, f2);
+ if (sc->interlaced)
+ put_be32(pb, f2);
av_reduce(&dar.num, &dar.den,
st->codec->width*st->codec->sample_aspect_ratio.num,
{
ByteIOContext *pb = s->pb;
- mxf_write_generic_desc(pb, st, key, size);
+ mxf_write_generic_desc(s, st, key, size);
// audio locked
mxf_write_local_tag(pb, 1, 0x3D02);
put_be32(pb, st->codec->channels);
mxf_write_local_tag(pb, 4, 0x3D01);
- put_be32(pb, st->codec->bits_per_coded_sample);
+ put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
+}
+
+static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
+{
+ ByteIOContext *pb = s->pb;
+
+ mxf_write_generic_sound_desc(s, st, key, size);
+
+ mxf_write_local_tag(pb, 2, 0x3D0A);
+ put_be16(pb, st->codec->block_align);
+
+ // avg bytes per sec
+ mxf_write_local_tag(pb, 4, 0x3D09);
+ put_be32(pb, st->codec->block_align*st->codec->sample_rate);
}
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
{
- mxf_write_generic_sound_desc(s, st, mxf_wav_descriptor_key, 93);
+ mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
}
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
{
- mxf_write_generic_sound_desc(s, st, mxf_aes3_descriptor_key, 93);
+ mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
}
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
ByteIOContext *pb = s->pb;
mxf_write_metadata_key(pb, 0x012300);
- klv_encode_ber_length(pb, 64);
+ klv_encode_ber_length(pb, 72);
mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
mxf_write_uuid(pb, EssenceContainerData, 0);
mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
put_be32(pb, 1);
+ mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
+ put_be32(pb, 2);
+
return 0;
}
return 0;
}
-static void mxf_write_partition(AVFormatContext *s, int bodysid, const uint8_t *key, int write_metadata)
+static int mxf_write_index_table_segment(AVFormatContext *s)
+{
+ MXFContext *mxf = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ int i, j, k, ret;
+ int temporal_reordering = 0;
+ int last_key_index = 0, key_index = 0;
+
+ av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
+
+ put_buffer(pb, index_table_segment_key, 16);
+ ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
+ mxf->edit_units_count*(11+(s->nb_streams-1)*4));
+
+ // instance id
+ mxf_write_local_tag(pb, 16, 0x3C0A);
+ mxf_write_uuid(pb, IndexTableSegment, 0);
+
+ // index edit rate
+ mxf_write_local_tag(pb, 8, 0x3F0B);
+ put_be32(pb, mxf->time_base.num);
+ put_be32(pb, mxf->time_base.den);
+
+ // index start position
+ mxf_write_local_tag(pb, 8, 0x3F0C);
+ put_be64(pb, 0);
+
+ // index duration
+ mxf_write_local_tag(pb, 8, 0x3F0D);
+ put_be64(pb, mxf->edit_units_count);
+
+ // edit unit byte count
+ mxf_write_local_tag(pb, 4, 0x3F05);
+ put_be32(pb, 0);
+
+ // index sid
+ mxf_write_local_tag(pb, 4, 0x3F06);
+ put_be32(pb, 2);
+
+ // body sid
+ mxf_write_local_tag(pb, 4, 0x3F07);
+ put_be32(pb, 1);
+
+ // slice count - 1
+ mxf_write_local_tag(pb, 1, 0x3F08);
+ put_byte(pb, s->nb_streams-1);
+
+ // delta entry array
+ mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
+ put_be32(pb, s->nb_streams); // num of entries
+ put_be32(pb, 6); // size of one entry
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ MXFStreamContext *sc = st->priv_data;
+ put_byte(pb, sc->temporal_reordering);
+ if (sc->temporal_reordering)
+ temporal_reordering = 1;
+ put_byte(pb, i);
+ put_be32(pb, 0); // element delta
+ }
+
+ mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
+ put_be32(pb, mxf->edit_units_count); // num of entries
+ put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
+ for (i = 0; i < mxf->edit_units_count; i++) {
+ if (temporal_reordering) {
+ int temporal_offset = 0;
+ for (j = i+1; j < mxf->edit_units_count; j++) {
+ temporal_offset++;
+ if (mxf->index_entries[j].flags & 0x10) { // backward prediction
+ // next is not b, so is reordered
+ if (!(mxf->index_entries[i+1].flags & 0x10)) {
+ if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
+ temporal_offset = 0;
+ else
+ temporal_offset = -temporal_offset;
+ }
+ break;
+ }
+ }
+ put_byte(pb, temporal_offset);
+ } else
+ put_byte(pb, 0);
+ if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
+ last_key_index = key_index;
+ key_index = i;
+ }
+ if (mxf->index_entries[i].flags & 0x10 && // backward prediction
+ !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
+ put_byte(pb, last_key_index - i);
+ } else {
+ put_byte(pb, key_index - i); // key frame offset
+ if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
+ last_key_index = key_index;
+ }
+ put_byte(pb, mxf->index_entries[i].flags);
+ // stream offset
+ put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
+ for (k = 0; k < s->nb_streams; k++) {
+ if (mxf->index_entries[i].slice_offset[k])
+ put_be32(pb, mxf->index_entries[i].slice_offset[k]);
+ }
+ }
+
+ return ret;
+}
+
+static void mxf_write_partition(AVFormatContext *s, int bodysid,
+ int indexsid, unsigned index_byte_count,
+ const uint8_t *key, int write_metadata)
{
MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
header_byte_count_offset = url_ftell(pb);
put_be64(pb, 0); // headerByteCount, update later
- // no indexTable
- put_be64(pb, 0); // indexByteCount
- put_be32(pb, 0); // indexSID
+ // indexTable
+ put_be64(pb, index_byte_count); // indexByteCount
+ put_be32(pb, indexsid); // indexSID
put_be64(pb, 0); // bodyOffset
put_be32(pb, bodysid); // bodySID
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
{
+ MXFContext *mxf = s->priv_data;
MXFStreamContext *sc = st->priv_data;
uint32_t c = -1;
int i;
+ mxf->index_entries[mxf->edit_units_count].flags = 0;
+
for(i = 0; i < pkt->size - 4; i++) {
c = (c<<8) + pkt->data[i];
if (c == 0x1B5) {
sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
break;
}
+ } else if (c == 0x1b8) { // gop
+ if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
+ mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
+ } else if (c == 0x1b3) { // seq
+ mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
+ } else if (c == 0x100) { // pic
+ int pict_type = (pkt->data[i+2]>>3) & 0x07;
+ if (pict_type == 2) { // P frame
+ mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
+ st->codec->gop_size = 1;
+ } else if (pict_type == 3) { // B frame
+ mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
+ sc->temporal_reordering = -1;
+ } else if (!pict_type) {
+ av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
+ return 0;
+ }
}
}
sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
return !!sc->codec_ul;
}
-static int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame)
+static int ff_audio_interleave_init(AVFormatContext *s,
+ const int *samples_per_frame,
+ AVRational time_base)
{
int i;
if (!samples_per_frame)
- samples_per_frame = PAL_samples_per_frame;
+ return -1;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
}
aic->samples_per_frame = samples_per_frame;
aic->samples = aic->samples_per_frame;
+ aic->time_base = time_base;
av_fifo_init(&aic->fifo, 100 * *aic->samples);
}
return 0;
}
+static void ff_audio_interleave_close(AVFormatContext *s)
+{
+ int i;
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ AudioInterleaveContext *aic = st->priv_data;
+
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO)
+ av_fifo_free(&aic->fifo);
+ }
+}
+
static int mxf_write_header(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
const int *samples_per_frame = NULL;
+ if (s->nb_streams > 17) {
+ av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
+ return -1;
+ }
+
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MXFStreamContext *sc = av_mallocz(sizeof(*sc));
st->priv_data = sc;
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- if (!av_cmp_q(st->codec->time_base, (AVRational){ 1, 25 })) {
+ if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
samples_per_frame = PAL_samples_per_frame;
mxf->time_base = (AVRational){ 1, 25 };
- } else if (!av_cmp_q(st->codec->time_base, (AVRational){ 1001, 30000 })) {
+ } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
samples_per_frame = NTSC_samples_per_frame;
mxf->time_base = (AVRational){ 1001, 30000 };
} else {
av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
return -1;
}
+ mxf->edit_unit_start = st->index;
+ av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if (st->codec->sample_rate != 48000) {
av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
return -1;
}
+ av_set_pts_info(st, 64, 1, st->codec->sample_rate);
}
sc->duration = -1;
for (i = 0; i < s->nb_streams; i++) {
MXFStreamContext *sc = s->streams[i]->priv_data;
- av_set_pts_info(s->streams[i], 64, mxf->time_base.num, mxf->time_base.den);
// update element count
sc->track_essence_element_key[13] = present[sc->index];
sc->order = AV_RB32(sc->track_essence_element_key+12);
}
- if (ff_audio_interleave_init(s, samples_per_frame) < 0)
+ if (!samples_per_frame)
+ samples_per_frame = PAL_samples_per_frame;
+
+ if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
return -1;
return 0;
AVStream *st = s->streams[pkt->stream_index];
MXFStreamContext *sc = st->priv_data;
- if (!mxf->header_written) {
- if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
- av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
- return -1;
- }
+ if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
+ mxf->index_entries = av_realloc(mxf->index_entries,
+ (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
+ sizeof(*mxf->index_entries));
+ if (!mxf->index_entries) {
+ av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
+ return -1;
}
- mxf_write_partition(s, 1, header_open_partition_key, 1);
+ }
+
+ if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
+ if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
+ av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
+ return -1;
+ }
+ }
+
+ if (!mxf->header_written) {
+ mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
mxf->header_written = 1;
}
+ if (st->index == mxf->edit_unit_start) {
+ mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
+ mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
+ mxf->edit_units_count++;
+ } else {
+ mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
+ url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
+ }
+
put_buffer(pb, sc->track_essence_element_key, 16); // write key
klv_encode_ber_length(pb, pkt->size); // write length
put_buffer(pb, pkt->data, pkt->size); // write value
return 0;
}
+static void mxf_write_random_index_pack(AVFormatContext *s)
+{
+ MXFContext *mxf = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ uint64_t pos = url_ftell(pb);
+
+ put_buffer(pb, random_index_pack_key, 16);
+ klv_encode_ber_length(pb, 28);
+
+ put_be32(pb, 1); // BodySID of header partition
+ put_be64(pb, 0); // offset of header partition
+
+ put_be32(pb, 0); // BodySID of footer partition
+ put_be64(pb, mxf->footer_partition_offset);
+
+ put_be32(pb, url_ftell(pb) - pos + 4);
+}
+
static int mxf_write_footer(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
+ unsigned index_byte_count =
+ 109 + s->nb_streams*6 +
+ mxf->edit_units_count*(11+(s->nb_streams-1)*4);
+
+ // add encoded ber length
+ index_byte_count += 16 +
+ (index_byte_count < 128 ? 1 : (av_log2(index_byte_count) >> 3) + 2);
mxf->footer_partition_offset = url_ftell(pb);
- mxf_write_partition(s, 0, footer_partition_key, 0);
+ mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
+
+ mxf_write_index_table_segment(s);
+
+ mxf_write_random_index_pack(s);
+
if (!url_is_streamed(s->pb)) {
url_fseek(pb, 0, SEEK_SET);
- mxf_write_partition(s, 1, header_closed_partition_key, 1);
+ mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
}
+
+ ff_audio_interleave_close(s);
+
mxf_free(s);
return 0;
}
av_fifo_read(&aic->fifo, pkt->data, size);
pkt->dts = pkt->pts = aic->dts;
- pkt->duration = av_rescale_q(*aic->samples,
- (AVRational){ 1, st->codec->sample_rate },
- st->time_base);
+ pkt->duration = av_rescale_q(*aic->samples, st->time_base, aic->time_base);
pkt->stream_index = stream_index;
aic->dts += pkt->duration;
return size;
}
-static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, int flush)
+static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
{
AVPacketList *pktl;
int stream_count = 0;
if (stream_count && (s->nb_streams == stream_count || flush)) {
pktl = s->packet_buffer;
- *out = pktl->pkt;
- //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
- s->packet_buffer = pktl->next;
- av_freep(&pktl);
-
- if (flush && stream_count < s->nb_streams) {
+ if (s->nb_streams != stream_count) {
+ MXFContext *mxf = s->priv_data;
+ AVPacketList *first = NULL;
+ // find first packet in edit unit
+ while (pktl) {
+ AVStream *st = s->streams[pktl->pkt.stream_index];
+ if (st->index == mxf->edit_unit_start)
+ break;
+ else if (!first)
+ first = pktl;
+ pktl = pktl->next;
+ }
// purge packet queue
- pktl = s->packet_buffer;
while (pktl) {
AVPacketList *next = pktl->next;
av_free_packet(&pktl->pkt);
av_freep(&pktl);
pktl = next;
}
- s->packet_buffer = NULL;
+ if (!first)
+ goto out;
+ pktl = first;
}
+ *out = pktl->pkt;
+ //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
+ s->packet_buffer = pktl->next;
+ av_freep(&pktl);
return 1;
} else {
+ out:
av_init_packet(out);
return 0;
}
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
{
- AVStream *st = s->streams[pkt ->stream_index];
- AVStream *st2 = s->streams[next->stream_index];
- MXFStreamContext *sc = st ->priv_data;
- MXFStreamContext *sc2 = st2->priv_data;
+ MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
+ MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
- int64_t left = st2->time_base.num * (int64_t)st ->time_base.den;
- int64_t right = st ->time_base.num * (int64_t)st2->time_base.den;
-
- return next->dts * left > pkt->dts * right || // FIXME this can overflow
- (next->dts * left == pkt->dts * right && sc->order < sc2->order);
+ return next->dts > pkt->dts ||
+ (next->dts == pkt->dts && sc->order < sc2->order);
}
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
aic->dts += pkt->duration;
ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
}
+ pkt = NULL;
}
for (i = 0; i < s->nb_streams; i++) {
}
}
- return mxf_interleave_get_packet(s, out, flush);
+ return mxf_interleave_get_packet(s, out, pkt, flush);
}
AVOutputFormat mxf_muxer = {
mxf_write_header,
mxf_write_packet,
mxf_write_footer,
- 0,
+ AVFMT_NOTIMESTAMPS,
NULL,
mxf_interleave,
};
-
-
projects / ffmpeg / blobdiff