/*
* MXF muxer
* Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
+ * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
*
* This file is part of FFmpeg.
*
//#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
+ uint64_t dts; ///< current dts
+ 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
+} AudioInterleaveContext;
+
typedef struct {
int local_tag;
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;
- const UID *essence_container_ul;
+ int index; ///< index in mxf_essence_container_uls table
const UID *codec_ul;
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;
+ void (*write_desc)();
+} MXFContainerEssenceEntry;
+
+static const struct {
enum CodecID id;
-} MXFContainerEssencePair;
+ 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);
-static const MXFContainerEssencePair mxf_essence_container_uls[] = {
+static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
{ { 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 },
+ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
+ 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 },
+ 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 },
+ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
+ 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 },
+ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
+ NULL },
};
typedef struct MXFContext {
int64_t footer_partition_offset;
int essence_container_count;
- uint8_t essence_containers_indices[sizeof(mxf_essence_container_uls)/
- sizeof(*mxf_essence_container_uls)];
+ 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;
-typedef struct {
- const UID key;
- void (*write)();
- enum CodecType type;
-} MXFDescriptorWriteTableEntry;
-
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
-static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
+static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
/**
* 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
{ 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
// Content Storage
{ 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
+ { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
// Essence Container Data
{ 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
{ 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
{ 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
{ 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
// Source Clip
- { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
+ { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
{ 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
{ 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
// File Descriptor
{ 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
{ 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
// Generic Picture Essence Descriptor
+ { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
+ { 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
+ { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
{ 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
{ 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,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
+ { 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 CodecID type, int value)
+static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
{
put_buffer(pb, uuid_base, 12);
put_be16(pb, type);
put_be16(pb, value);
}
-static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value)
+static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
{
put_buffer(pb, umid_base, 16);
mxf_write_uuid(pb, type, value);
// long form
put_byte(pb, 0x80 + size);
while(size) {
- size --;
+ size--;
put_byte(pb, len >> 8 * size & 0xff);
}
return 0;
}
/*
- * Get essence container ul and return its index position
+ * Get essence container ul index
*/
-static const UID *mxf_get_essence_container_ul(enum CodecID type, int *index)
+static int mxf_get_essence_container_ul_index(enum CodecID id)
{
- for (*index = 0; *index < sizeof(mxf_essence_container_uls)/
- sizeof(*mxf_essence_container_uls); (*index)++)
- if (mxf_essence_container_uls[*index].id == type)
- return &mxf_essence_container_uls[*index].container_ul;
- *index = -1;
- return NULL;
+ int 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;
}
static void mxf_write_primer_pack(AVFormatContext *s)
ByteIOContext *pb = s->pb;
int local_tag_number, i = 0;
- local_tag_number = sizeof(mxf_local_tag_batch)/sizeof(*mxf_local_tag_batch);
+ local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
put_buffer(pb, primer_pack_key, 16);
klv_encode_ber_length(pb, local_tag_number * 18 + 8);
mxf_write_metadata_key(pb, 0x011800);
PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 64);
+ klv_encode_ber_length(pb, 92);
// write uid
mxf_write_local_tag(pb, 16, 0x3C0A);
mxf_write_refs_count(pb, 2);
mxf_write_uuid(pb, MaterialPackage, 0);
mxf_write_uuid(pb, SourcePackage, 0);
-}
-static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
-{
- ByteIOContext *pb = s->pb;
- int i;
-
- if (type == MaterialPackage) {
- mxf_write_metadata_key(pb, 0x013600);
- PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
- } else {
- mxf_write_metadata_key(pb, 0x013700);
- PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
- }
-
- // write uid
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type, 0);
- av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
- PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
-
- // write package umid
- mxf_write_local_tag(pb, 32, 0x4401);
- mxf_write_umid(pb, type, 0);
- PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
-
- // write create date
- mxf_write_local_tag(pb, 8, 0x4405);
- put_be64(pb, 0);
-
- // write modified date
- mxf_write_local_tag(pb, 8, 0x4404);
- put_be64(pb, 0);
-
- // write track refs
- mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
- mxf_write_refs_count(pb, s->nb_streams);
- for (i = 0; i < s->nb_streams; i++)
- mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
-
- // write multiple descriptor reference
- if (type == SourcePackage) {
- mxf_write_local_tag(pb, 16, 0x4701);
- mxf_write_uuid(pb, MultipleDescriptor, 0);
- }
+ // write essence container data
+ mxf_write_local_tag(pb, 8 + 16, 0x1902);
+ mxf_write_refs_count(pb, 1);
+ mxf_write_uuid(pb, EssenceContainerData, 0);
}
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
mxf_write_uuid(pb, SubDescriptor, i);
}
-static void mxf_write_generic_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
+static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key, unsigned size)
{
MXFStreamContext *sc = st->priv_data;
- put_buffer(pb, desc_tbl->key, 16);
- klv_encode_ber_length(pb, 108);
+ put_buffer(pb, key, 16);
+ klv_encode_ber_length(pb, size);
mxf_write_local_tag(pb, 16, 0x3C0A);
mxf_write_uuid(pb, SubDescriptor, st->index);
put_be32(pb, st->time_base.num);
mxf_write_local_tag(pb, 16, 0x3004);
- put_buffer(pb, *sc->essence_container_ul, 16);
-
- mxf_write_local_tag(pb, 16, 0x3201);
- put_buffer(pb, *sc->codec_ul, 16);
+ put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
}
-static void mxf_write_mpegvideo_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
+static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
+static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
+static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
+
+static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
{
+ MXFStreamContext *sc = st->priv_data;
ByteIOContext *pb = s->pb;
+ int stored_height = (st->codec->height+15)/16*16;
+ AVRational dar;
+ int f1, f2;
- mxf_write_generic_desc(pb, desc_tbl, st);
+ mxf_write_generic_desc(pb, 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, st->codec->height);
+ 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
+ switch (st->codec->height) {
+ case 576: f1 = 23; f2 = 336; break;
+ case 608: f1 = 7; f2 = 320; break;
+ case 480: f1 = 20; f2 = 283; break;
+ case 512: f1 = 7; f2 = 270; break;
+ case 720: f1 = 26; f2 = 0; break; // progressive
+ case 1080: f1 = 21; f2 = 584; break;
+ default: f1 = 0; f2 = 0; break;
+ }
+
+ if (!sc->interlaced) {
+ f2 = 0;
+ 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);
+ if (sc->interlaced)
+ put_be32(pb, f2);
+
+ av_reduce(&dar.num, &dar.den,
+ st->codec->width*st->codec->sample_aspect_ratio.num,
+ st->codec->height*st->codec->sample_aspect_ratio.den,
+ 1024*1024);
mxf_write_local_tag(pb, 8, 0x320E);
- put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);
- put_be32(pb, st->codec->width * st->sample_aspect_ratio.num);
+ put_be32(pb, dar.num);
+ put_be32(pb, dar.den);
+
+ mxf_write_local_tag(pb, 16, 0x3201);
+ put_buffer(pb, *sc->codec_ul, 16);
}
-static void mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
+static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
{
ByteIOContext *pb = s->pb;
- mxf_write_generic_desc(pb, desc_tbl, st);
+ mxf_write_generic_desc(pb, st, key, size);
+
+ // audio locked
+ mxf_write_local_tag(pb, 1, 0x3D02);
+ put_byte(pb, 1);
// write audio sampling rate
mxf_write_local_tag(pb, 8, 0x3D03);
put_be32(pb, st->codec->channels);
mxf_write_local_tag(pb, 4, 0x3D01);
- put_be32(pb, st->codec->bits_per_sample);
+ put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
}
-static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = {
- { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_write_mpegvideo_desc, CODEC_ID_MPEG2VIDEO},
- { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_write_wav_desc, CODEC_ID_PCM_S16LE},
- { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, CODEC_ID_NONE},
-};
+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);
-static void mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSetType type)
+ 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_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
+}
+
+static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
+{
+ 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;
int i;
- const MXFDescriptorWriteTableEntry *desc = NULL;
- mxf_write_package(s, type);
- if (type == SourcePackage)
- mxf_write_multi_descriptor(s);
+ if (type == MaterialPackage) {
+ mxf_write_metadata_key(pb, 0x013600);
+ PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
+ klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
+ } else {
+ mxf_write_metadata_key(pb, 0x013700);
+ PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
+ klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
+ }
+
+ // write uid
+ mxf_write_local_tag(pb, 16, 0x3C0A);
+ mxf_write_uuid(pb, type, 0);
+ av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
+ PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
+
+ // write package umid
+ mxf_write_local_tag(pb, 32, 0x4401);
+ mxf_write_umid(pb, type, 0);
+ PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
+
+ // write create date
+ mxf_write_local_tag(pb, 8, 0x4405);
+ put_be64(pb, 0);
+
+ // write modified date
+ mxf_write_local_tag(pb, 8, 0x4404);
+ put_be64(pb, 0);
+
+ // write track refs
+ mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
+ mxf_write_refs_count(pb, s->nb_streams);
+ for (i = 0; i < s->nb_streams; i++)
+ mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
+
+ // write multiple descriptor reference
+ if (type == SourcePackage) {
+ mxf_write_local_tag(pb, 16, 0x4701);
+ if (s->nb_streams > 1) {
+ mxf_write_uuid(pb, MultipleDescriptor, 0);
+ mxf_write_multi_descriptor(s);
+ } else
+ mxf_write_uuid(pb, SubDescriptor, 0);
+ }
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
mxf_write_structural_component(s, st, type);
if (type == SourcePackage) {
- for (desc = mxf_descriptor_write_table; desc->write; desc++) {
- if (s->streams[i]->codec->codec_id == desc->type) {
- desc->write(s, desc, st);
- break;
- }
- }
+ MXFStreamContext *sc = st->priv_data;
+ mxf_essence_container_uls[sc->index].write_desc(s, st);
}
}
}
+static int mxf_write_essence_container_data(AVFormatContext *s)
+{
+ ByteIOContext *pb = s->pb;
+
+ mxf_write_metadata_key(pb, 0x012300);
+ 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, 32, 0x2701); // Linked Package UID
+ mxf_write_umid(pb, SourcePackage, 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;
+}
+
static int mxf_write_header_metadata_sets(AVFormatContext *s)
{
mxf_write_preface(s);
mxf_write_identification(s);
mxf_write_content_storage(s);
- mxf_build_structural_metadata(s, MaterialPackage);
- mxf_build_structural_metadata(s, SourcePackage);
+ mxf_write_package(s, MaterialPackage);
+ mxf_write_package(s, SourcePackage);
+ mxf_write_essence_container_data(s);
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, key_offset = 0;
+ int temporal_reordering = 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 (mxf->index_entries[i].flags & 0x40)
+ key_offset = 0;
+ 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);
+ put_byte(pb, key_offset);
+ 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]);
+ }
+ key_offset--;
+ }
+
+ return ret;
+}
+
+static void mxf_write_partition(AVFormatContext *s, int bodysid, int indexsid,
+ 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, indexsid ? 19 + 109 + s->nb_streams*6 +
+ mxf->edit_units_count*(11+(s->nb_streams-1)*4) : 0); // indexByteCount
+ put_be32(pb, indexsid); // indexSID
put_be64(pb, 0); // bodyOffset
put_be32(pb, bodysid); // bodySID
return NULL;
}
+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) {
+ if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
+ st->codec->profile = pkt->data[i+1] & 0x07;
+ st->codec->level = pkt->data[i+2] >> 4;
+ } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
+ 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)
+{
+ int i;
+
+ if (!samples_per_frame)
+ return -1;
+
+ 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) {
+ aic->sample_size = (st->codec->channels *
+ av_get_bits_per_sample(st->codec->codec_id)) / 8;
+ if (!aic->sample_size) {
+ av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
+ return -1;
+ }
+ aic->samples_per_frame = samples_per_frame;
+ aic->samples = aic->samples_per_frame;
+
+ 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;
- int i, index;
- uint8_t present[sizeof(mxf_essence_container_uls)/
- sizeof(*mxf_essence_container_uls)] = {0};
+ int i;
+ 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];
if (!sc)
return AVERROR(ENOMEM);
st->priv_data = sc;
- // set pts information
- if (st->codec->codec_type == CODEC_TYPE_VIDEO)
- av_set_pts_info(st, 64, 1, st->codec->time_base.den);
- else if (st->codec->codec_type == CODEC_TYPE_AUDIO)
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+
+ if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
+ 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 (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;
+ } 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;
+ }
+ }
sc->duration = -1;
- sc->essence_container_ul = mxf_get_essence_container_ul(st->codec->codec_id, &index);
- if (!sc->essence_container_ul) {
+ sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
+ if (sc->index == -1) {
av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
"codec not currently supported in container\n", i);
return -1;
}
- if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (st->codec->profile == FF_PROFILE_UNKNOWN ||
- st->codec->level == FF_LEVEL_UNKNOWN) {
- av_log(s, AV_LOG_ERROR, "track %d: profile and level must be set for mpeg-2\n", i);
- return -1;
- }
- sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
- if (!sc->codec_ul) {
- av_log(s, AV_LOG_ERROR, "track %d: could not find codec ul for mpeg-2, "
- "unsupported profile/level\n", i);
- return -1;
- }
- } else
- sc->codec_ul = &mxf_essence_container_uls[index].codec_ul;
+ sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
- if (!present[index]) {
- mxf->essence_containers_indices[mxf->essence_container_count++] = index;
- present[index] = 1;
+ if (!present[sc->index]) {
+ mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
+ present[sc->index] = 1;
} else
- present[index]++;
- memcpy(sc->track_essence_element_key, mxf_essence_container_uls[index].element_ul, 15);
- sc->track_essence_element_key[15] = present[index];
+ present[sc->index]++;
+ memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
+ sc->track_essence_element_key[15] = present[sc->index];
PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
}
- mxf_write_partition(s, 1, header_open_partition_key, 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 (!samples_per_frame)
+ samples_per_frame = PAL_samples_per_frame;
+
+ if (ff_audio_interleave_init(s, samples_per_frame) < 0)
+ return -1;
return 0;
}
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
{
+ MXFContext *mxf = s->priv_data;
ByteIOContext *pb = s->pb;
AVStream *st = s->streams[pkt->stream_index];
MXFStreamContext *sc = st->priv_data;
+ 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;
+ }
+ }
+
+ 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, 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;
mxf->footer_partition_offset = url_ftell(pb);
- mxf_write_partition(s, 0, footer_partition_key, 0);
+ mxf_write_partition(s, 0, 2, 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, header_closed_partition_key, 1);
}
+
+ ff_audio_interleave_close(s);
+
mxf_free(s);
return 0;
}
+static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
+ int stream_index, int flush)
+{
+ AVStream *st = s->streams[stream_index];
+ AudioInterleaveContext *aic = st->priv_data;
+
+ int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
+ if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
+ return 0;
+
+ av_new_packet(pkt, size);
+ 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->stream_index = stream_index;
+ aic->dts += pkt->duration;
+
+ aic->samples++;
+ if (!*aic->samples)
+ aic->samples = aic->samples_per_frame;
+
+ return size;
+}
+
+static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
+{
+ AVPacketList *pktl;
+ int stream_count = 0;
+ int streams[MAX_STREAMS];
+
+ memset(streams, 0, sizeof(streams));
+ pktl = s->packet_buffer;
+ while (pktl) {
+ //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
+ if (!streams[pktl->pkt.stream_index])
+ stream_count++;
+ streams[pktl->pkt.stream_index]++;
+ pktl = pktl->next;
+ }
+
+ if (stream_count && (s->nb_streams == stream_count || flush)) {
+ pktl = s->packet_buffer;
+ 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
+ while (pktl) {
+ AVPacketList *next = pktl->next;
+ av_free_packet(&pktl->pkt);
+ av_freep(&pktl);
+ pktl = next;
+ }
+ 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;
+
+ 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);
+}
+
+static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
+{
+ int i;
+
+ if (pkt) {
+ AVStream *st = s->streams[pkt->stream_index];
+ AudioInterleaveContext *aic = st->priv_data;
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
+ av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
+ } else {
+ // rewrite pts and dts to be decoded time line position
+ pkt->pts = pkt->dts = aic->dts;
+ aic->dts += pkt->duration;
+ ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
+ }
+ pkt = NULL;
+ }
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
+ AVPacket new_pkt;
+ while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
+ ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
+ }
+ }
+
+ return mxf_interleave_get_packet(s, out, pkt, flush);
+}
+
AVOutputFormat mxf_muxer = {
"mxf",
NULL_IF_CONFIG_SMALL("Material eXchange Format"),
mxf_write_header,
mxf_write_packet,
mxf_write_footer,
+ AVFMT_NOTIMESTAMPS,
+ NULL,
+ mxf_interleave,
};
-
-
projects / ffmpeg / blobdiff