forked from KolibriOS/kolibrios
1034 lines
32 KiB
C
1034 lines
32 KiB
C
/*
|
|
* GXF muxer.
|
|
* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/intfloat.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/mathematics.h"
|
|
#include "libavutil/timecode.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "gxf.h"
|
|
#include "audiointerleave.h"
|
|
|
|
#define GXF_AUDIO_PACKET_SIZE 65536
|
|
|
|
#define GXF_TIMECODE(c, d, h, m, s, f) \
|
|
((c) << 30 | (d) << 29 | (h) << 24 | (m) << 16 | (s) << 8 | (f))
|
|
|
|
typedef struct GXFTimecode{
|
|
int hh;
|
|
int mm;
|
|
int ss;
|
|
int ff;
|
|
int color;
|
|
int drop;
|
|
} GXFTimecode;
|
|
|
|
typedef struct GXFStreamContext {
|
|
AudioInterleaveContext aic;
|
|
uint32_t track_type;
|
|
uint32_t sample_size;
|
|
uint32_t sample_rate;
|
|
uint16_t media_type;
|
|
uint16_t media_info;
|
|
int frame_rate_index;
|
|
int lines_index;
|
|
int fields;
|
|
int iframes;
|
|
int pframes;
|
|
int bframes;
|
|
int p_per_gop;
|
|
int b_per_i_or_p; ///< number of B frames per I frame or P frame
|
|
int first_gop_closed;
|
|
unsigned order; ///< interleaving order
|
|
} GXFStreamContext;
|
|
|
|
typedef struct GXFContext {
|
|
AVClass *av_class;
|
|
uint32_t nb_fields;
|
|
uint16_t audio_tracks;
|
|
uint16_t mpeg_tracks;
|
|
int64_t creation_time;
|
|
uint32_t umf_start_offset;
|
|
uint32_t umf_track_offset;
|
|
uint32_t umf_media_offset;
|
|
uint32_t umf_length;
|
|
uint16_t umf_track_size;
|
|
uint16_t umf_media_size;
|
|
AVRational time_base;
|
|
int flags;
|
|
GXFStreamContext timecode_track;
|
|
unsigned *flt_entries; ///< offsets of packets /1024, starts after 2nd video field
|
|
unsigned flt_entries_nb;
|
|
uint64_t *map_offsets; ///< offset of map packets
|
|
unsigned map_offsets_nb;
|
|
unsigned packet_count;
|
|
GXFTimecode tc;
|
|
} GXFContext;
|
|
|
|
static const struct {
|
|
int height, index;
|
|
} gxf_lines_tab[] = {
|
|
{ 480, 1 }, /* NTSC */
|
|
{ 512, 1 }, /* NTSC + VBI */
|
|
{ 576, 2 }, /* PAL */
|
|
{ 608, 2 }, /* PAL + VBI */
|
|
{ 1080, 4 },
|
|
{ 720, 6 },
|
|
};
|
|
|
|
static const AVCodecTag gxf_media_types[] = {
|
|
{ AV_CODEC_ID_MJPEG , 3 }, /* NTSC */
|
|
{ AV_CODEC_ID_MJPEG , 4 }, /* PAL */
|
|
{ AV_CODEC_ID_PCM_S24LE , 9 },
|
|
{ AV_CODEC_ID_PCM_S16LE , 10 },
|
|
{ AV_CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */
|
|
{ AV_CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */
|
|
{ AV_CODEC_ID_DVVIDEO , 13 }, /* NTSC */
|
|
{ AV_CODEC_ID_DVVIDEO , 14 }, /* PAL */
|
|
{ AV_CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */
|
|
{ AV_CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */
|
|
{ AV_CODEC_ID_AC3 , 17 },
|
|
//{ AV_CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */
|
|
{ AV_CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */
|
|
{ AV_CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */
|
|
{ AV_CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */
|
|
{ AV_CODEC_ID_NONE, 0 },
|
|
};
|
|
|
|
#define SERVER_PATH "EXT:/PDR/default/"
|
|
#define ES_NAME_PATTERN "EXT:/PDR/default/ES."
|
|
|
|
static int gxf_find_lines_index(AVStream *st)
|
|
{
|
|
GXFStreamContext *sc = st->priv_data;
|
|
int i;
|
|
|
|
for (i = 0; i < 6; ++i) {
|
|
if (st->codec->height == gxf_lines_tab[i].height) {
|
|
sc->lines_index = gxf_lines_tab[i].index;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void gxf_write_padding(AVIOContext *pb, int64_t to_pad)
|
|
{
|
|
for (; to_pad > 0; to_pad--) {
|
|
avio_w8(pb, 0);
|
|
}
|
|
}
|
|
|
|
static int64_t updatePacketSize(AVIOContext *pb, int64_t pos)
|
|
{
|
|
int64_t curpos;
|
|
int size;
|
|
|
|
size = avio_tell(pb) - pos;
|
|
if (size % 4) {
|
|
gxf_write_padding(pb, 4 - size % 4);
|
|
size = avio_tell(pb) - pos;
|
|
}
|
|
curpos = avio_tell(pb);
|
|
avio_seek(pb, pos + 6, SEEK_SET);
|
|
avio_wb32(pb, size);
|
|
avio_seek(pb, curpos, SEEK_SET);
|
|
return curpos - pos;
|
|
}
|
|
|
|
static int64_t updateSize(AVIOContext *pb, int64_t pos)
|
|
{
|
|
int64_t curpos;
|
|
|
|
curpos = avio_tell(pb);
|
|
avio_seek(pb, pos, SEEK_SET);
|
|
avio_wb16(pb, curpos - pos - 2);
|
|
avio_seek(pb, curpos, SEEK_SET);
|
|
return curpos - pos;
|
|
}
|
|
|
|
static void gxf_write_packet_header(AVIOContext *pb, GXFPktType type)
|
|
{
|
|
avio_wb32(pb, 0); /* packet leader for synchro */
|
|
avio_w8(pb, 1);
|
|
avio_w8(pb, type); /* map packet */
|
|
avio_wb32(pb, 0); /* size */
|
|
avio_wb32(pb, 0); /* reserved */
|
|
avio_w8(pb, 0xE1); /* trailer 1 */
|
|
avio_w8(pb, 0xE2); /* trailer 2 */
|
|
}
|
|
|
|
static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st)
|
|
{
|
|
GXFStreamContext *sc = st->priv_data;
|
|
char buffer[1024];
|
|
int size, starting_line;
|
|
|
|
if (sc->iframes) {
|
|
sc->p_per_gop = sc->pframes / sc->iframes;
|
|
if (sc->pframes % sc->iframes)
|
|
sc->p_per_gop++;
|
|
if (sc->pframes) {
|
|
sc->b_per_i_or_p = sc->bframes / sc->pframes;
|
|
if (sc->bframes % sc->pframes)
|
|
sc->b_per_i_or_p++;
|
|
}
|
|
if (sc->p_per_gop > 9)
|
|
sc->p_per_gop = 9; /* ensure value won't take more than one char */
|
|
if (sc->b_per_i_or_p > 9)
|
|
sc->b_per_i_or_p = 9; /* ensure value won't take more than one char */
|
|
}
|
|
if (st->codec->height == 512 || st->codec->height == 608)
|
|
starting_line = 7; // VBI
|
|
else if (st->codec->height == 480)
|
|
starting_line = 20;
|
|
else
|
|
starting_line = 23; // default PAL
|
|
|
|
size = snprintf(buffer, sizeof(buffer), "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n"
|
|
"Pix 0\nCf %d\nCg %d\nSl %d\nnl16 %d\nVi 1\nf1 1\n",
|
|
(float)st->codec->bit_rate, sc->p_per_gop, sc->b_per_i_or_p,
|
|
st->codec->pix_fmt == AV_PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1,
|
|
starting_line, (st->codec->height + 15) / 16);
|
|
av_assert0(size < sizeof(buffer));
|
|
avio_w8(pb, TRACK_MPG_AUX);
|
|
avio_w8(pb, size + 1);
|
|
avio_write(pb, (uint8_t *)buffer, size + 1);
|
|
return size + 3;
|
|
}
|
|
|
|
static int gxf_write_dv_auxiliary(AVIOContext *pb, AVStream *st)
|
|
{
|
|
int64_t track_aux_data = 0;
|
|
|
|
avio_w8(pb, TRACK_AUX);
|
|
avio_w8(pb, 8);
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_YUV420P)
|
|
track_aux_data |= 0x01; /* marks stream as DVCAM instead of DVPRO */
|
|
track_aux_data |= 0x40000000; /* aux data is valid */
|
|
avio_wl64(pb, track_aux_data);
|
|
return 8;
|
|
}
|
|
|
|
static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFContext *gxf)
|
|
{
|
|
uint32_t timecode = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
|
|
gxf->tc.hh, gxf->tc.mm,
|
|
gxf->tc.ss, gxf->tc.ff);
|
|
|
|
avio_w8(pb, TRACK_AUX);
|
|
avio_w8(pb, 8);
|
|
avio_wl32(pb, timecode);
|
|
/* reserved */
|
|
avio_wl32(pb, 0);
|
|
return 8;
|
|
}
|
|
|
|
static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos;
|
|
|
|
/* track description section */
|
|
avio_w8(pb, sc->media_type + 0x80);
|
|
avio_w8(pb, index + 0xC0);
|
|
|
|
pos = avio_tell(pb);
|
|
avio_wb16(pb, 0); /* size */
|
|
|
|
/* media file name */
|
|
avio_w8(pb, TRACK_NAME);
|
|
avio_w8(pb, strlen(ES_NAME_PATTERN) + 3);
|
|
avio_write(pb, ES_NAME_PATTERN, sizeof(ES_NAME_PATTERN) - 1);
|
|
avio_wb16(pb, sc->media_info);
|
|
avio_w8(pb, 0);
|
|
|
|
switch (sc->track_type) {
|
|
case 3: /* timecode */
|
|
gxf_write_timecode_auxiliary(pb, gxf);
|
|
break;
|
|
case 4: /* MPEG2 */
|
|
case 9: /* MPEG1 */
|
|
gxf_write_mpeg_auxiliary(pb, s->streams[index]);
|
|
break;
|
|
case 5: /* DV25 */
|
|
case 6: /* DV50 */
|
|
gxf_write_dv_auxiliary(pb, s->streams[index]);
|
|
break;
|
|
default:
|
|
avio_w8(pb, TRACK_AUX);
|
|
avio_w8(pb, 8);
|
|
avio_wl64(pb, 0);
|
|
}
|
|
|
|
/* file system version */
|
|
avio_w8(pb, TRACK_VER);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, 0);
|
|
|
|
/* frame rate */
|
|
avio_w8(pb, TRACK_FPS);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, sc->frame_rate_index);
|
|
|
|
/* lines per frame */
|
|
avio_w8(pb, TRACK_LINES);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, sc->lines_index);
|
|
|
|
/* fields per frame */
|
|
avio_w8(pb, TRACK_FPF);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, sc->fields);
|
|
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_material_data_section(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos;
|
|
int len;
|
|
const char *filename = strrchr(s->filename, '/');
|
|
|
|
pos = avio_tell(pb);
|
|
avio_wb16(pb, 0); /* size */
|
|
|
|
/* name */
|
|
if (filename)
|
|
filename++;
|
|
else
|
|
filename = s->filename;
|
|
len = strlen(filename);
|
|
|
|
avio_w8(pb, MAT_NAME);
|
|
avio_w8(pb, strlen(SERVER_PATH) + len + 1);
|
|
avio_write(pb, SERVER_PATH, sizeof(SERVER_PATH) - 1);
|
|
avio_write(pb, filename, len);
|
|
avio_w8(pb, 0);
|
|
|
|
/* first field */
|
|
avio_w8(pb, MAT_FIRST_FIELD);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, 0);
|
|
|
|
/* last field */
|
|
avio_w8(pb, MAT_LAST_FIELD);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, gxf->nb_fields);
|
|
|
|
/* reserved */
|
|
avio_w8(pb, MAT_MARK_IN);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, 0);
|
|
|
|
avio_w8(pb, MAT_MARK_OUT);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, gxf->nb_fields);
|
|
|
|
/* estimated size */
|
|
avio_w8(pb, MAT_SIZE);
|
|
avio_w8(pb, 4);
|
|
avio_wb32(pb, avio_size(pb) / 1024);
|
|
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_track_description_section(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos;
|
|
int i;
|
|
|
|
pos = avio_tell(pb);
|
|
avio_wb16(pb, 0); /* size */
|
|
for (i = 0; i < s->nb_streams; ++i)
|
|
gxf_write_track_description(s, s->streams[i]->priv_data, i);
|
|
|
|
gxf_write_track_description(s, &gxf->timecode_track, s->nb_streams);
|
|
|
|
return updateSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_map_packet(AVFormatContext *s, int rewrite)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos = avio_tell(pb);
|
|
|
|
if (!rewrite) {
|
|
if (!(gxf->map_offsets_nb % 30)) {
|
|
int err;
|
|
if ((err = av_reallocp_array(&gxf->map_offsets,
|
|
gxf->map_offsets_nb + 30,
|
|
sizeof(*gxf->map_offsets))) < 0) {
|
|
gxf->map_offsets_nb = 0;
|
|
av_log(s, AV_LOG_ERROR, "could not realloc map offsets\n");
|
|
return err;
|
|
}
|
|
}
|
|
gxf->map_offsets[gxf->map_offsets_nb++] = pos; // do not increment here
|
|
}
|
|
|
|
gxf_write_packet_header(pb, PKT_MAP);
|
|
|
|
/* preamble */
|
|
avio_w8(pb, 0xE0); /* version */
|
|
avio_w8(pb, 0xFF); /* reserved */
|
|
|
|
gxf_write_material_data_section(s);
|
|
gxf_write_track_description_section(s);
|
|
|
|
return updatePacketSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_flt_packet(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos = avio_tell(pb);
|
|
int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1;
|
|
int flt_entries = gxf->nb_fields / fields_per_flt;
|
|
int i = 0;
|
|
|
|
gxf_write_packet_header(pb, PKT_FLT);
|
|
|
|
avio_wl32(pb, fields_per_flt); /* number of fields */
|
|
avio_wl32(pb, flt_entries); /* number of active flt entries */
|
|
|
|
if (gxf->flt_entries) {
|
|
for (i = 0; i < flt_entries; i++)
|
|
avio_wl32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]);
|
|
}
|
|
|
|
for (; i < 1000; i++)
|
|
avio_wl32(pb, 0);
|
|
|
|
return updatePacketSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_umf_material_description(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
|
|
int64_t timestamp = 0;
|
|
AVDictionaryEntry *t;
|
|
uint64_t nb_fields;
|
|
uint32_t timecode_in; // timecode at mark in
|
|
uint32_t timecode_out; // timecode at mark out
|
|
|
|
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
|
|
timestamp = ff_iso8601_to_unix_time(t->value);
|
|
|
|
timecode_in = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
|
|
gxf->tc.hh, gxf->tc.mm,
|
|
gxf->tc.ss, gxf->tc.ff);
|
|
|
|
nb_fields = gxf->nb_fields +
|
|
gxf->tc.hh * (timecode_base * 3600) +
|
|
gxf->tc.mm * (timecode_base * 60) +
|
|
gxf->tc.ss * timecode_base +
|
|
gxf->tc.ff;
|
|
|
|
timecode_out = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
|
|
nb_fields / (timecode_base * 3600) % 24,
|
|
nb_fields / (timecode_base * 60) % 60,
|
|
nb_fields / timecode_base % 60,
|
|
nb_fields % timecode_base);
|
|
|
|
avio_wl32(pb, gxf->flags);
|
|
avio_wl32(pb, gxf->nb_fields); /* length of the longest track */
|
|
avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */
|
|
avio_wl32(pb, 0); /* mark in */
|
|
avio_wl32(pb, gxf->nb_fields); /* mark out */
|
|
avio_wl32(pb, timecode_in); /* timecode mark in */
|
|
avio_wl32(pb, timecode_out); /* timecode mark out */
|
|
avio_wl64(pb, timestamp); /* modification time */
|
|
avio_wl64(pb, timestamp); /* creation time */
|
|
avio_wl16(pb, 0); /* reserved */
|
|
avio_wl16(pb, 0); /* reserved */
|
|
avio_wl16(pb, gxf->audio_tracks);
|
|
avio_wl16(pb, 1); /* timecode track count */
|
|
avio_wl16(pb, 0); /* reserved */
|
|
avio_wl16(pb, gxf->mpeg_tracks);
|
|
return 48;
|
|
}
|
|
|
|
static int gxf_write_umf_payload(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
|
|
avio_wl32(pb, gxf->umf_length); /* total length of the umf data */
|
|
avio_wl32(pb, 3); /* version */
|
|
avio_wl32(pb, s->nb_streams+1);
|
|
avio_wl32(pb, gxf->umf_track_offset); /* umf track section offset */
|
|
avio_wl32(pb, gxf->umf_track_size);
|
|
avio_wl32(pb, s->nb_streams+1);
|
|
avio_wl32(pb, gxf->umf_media_offset);
|
|
avio_wl32(pb, gxf->umf_media_size);
|
|
avio_wl32(pb, gxf->umf_length); /* user data offset */
|
|
avio_wl32(pb, 0); /* user data size */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
return 48;
|
|
}
|
|
|
|
static int gxf_write_umf_track_description(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
GXFContext *gxf = s->priv_data;
|
|
int64_t pos = avio_tell(pb);
|
|
int i;
|
|
|
|
gxf->umf_track_offset = pos - gxf->umf_start_offset;
|
|
for (i = 0; i < s->nb_streams; ++i) {
|
|
GXFStreamContext *sc = s->streams[i]->priv_data;
|
|
avio_wl16(pb, sc->media_info);
|
|
avio_wl16(pb, 1);
|
|
}
|
|
|
|
avio_wl16(pb, gxf->timecode_track.media_info);
|
|
avio_wl16(pb, 1);
|
|
|
|
return avio_tell(pb) - pos;
|
|
}
|
|
|
|
static int gxf_write_umf_media_mpeg(AVIOContext *pb, AVStream *st)
|
|
{
|
|
GXFStreamContext *sc = st->priv_data;
|
|
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P)
|
|
avio_wl32(pb, 2);
|
|
else
|
|
avio_wl32(pb, 1); /* default to 420 */
|
|
avio_wl32(pb, sc->first_gop_closed == 1); /* closed = 1, open = 0, unknown = 255 */
|
|
avio_wl32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */
|
|
avio_wl32(pb, 1); /* I picture per GOP */
|
|
avio_wl32(pb, sc->p_per_gop);
|
|
avio_wl32(pb, sc->b_per_i_or_p);
|
|
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
|
|
avio_wl32(pb, 2);
|
|
else if (st->codec->codec_id == AV_CODEC_ID_MPEG1VIDEO)
|
|
avio_wl32(pb, 1);
|
|
else
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0); /* reserved */
|
|
return 32;
|
|
}
|
|
|
|
static int gxf_write_umf_media_timecode(AVIOContext *pb, int drop)
|
|
{
|
|
avio_wl32(pb, drop); /* drop frame */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
return 32;
|
|
}
|
|
|
|
static int gxf_write_umf_media_dv(AVIOContext *pb, GXFStreamContext *sc, AVStream *st)
|
|
{
|
|
int dv_umf_data = 0;
|
|
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_YUV420P)
|
|
dv_umf_data |= 0x20; /* marks as DVCAM instead of DVPRO */
|
|
avio_wl32(pb, dv_umf_data);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
avio_wl32(pb, 0);
|
|
return 32;
|
|
}
|
|
|
|
static int gxf_write_umf_media_audio(AVIOContext *pb, GXFStreamContext *sc)
|
|
{
|
|
avio_wl64(pb, av_double2int(1)); /* sound level to begin to */
|
|
avio_wl64(pb, av_double2int(1)); /* sound level to begin to */
|
|
avio_wl32(pb, 0); /* number of fields over which to ramp up sound level */
|
|
avio_wl32(pb, 0); /* number of fields over which to ramp down sound level */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
avio_wl32(pb, 0); /* reserved */
|
|
return 32;
|
|
}
|
|
|
|
static int gxf_write_umf_media_description(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos;
|
|
int i, j;
|
|
|
|
pos = avio_tell(pb);
|
|
gxf->umf_media_offset = pos - gxf->umf_start_offset;
|
|
for (i = 0; i <= s->nb_streams; ++i) {
|
|
GXFStreamContext *sc;
|
|
int64_t startpos, curpos;
|
|
|
|
if (i == s->nb_streams)
|
|
sc = &gxf->timecode_track;
|
|
else
|
|
sc = s->streams[i]->priv_data;
|
|
|
|
startpos = avio_tell(pb);
|
|
avio_wl16(pb, 0); /* length */
|
|
avio_wl16(pb, sc->media_info);
|
|
avio_wl16(pb, 0); /* reserved */
|
|
avio_wl16(pb, 0); /* reserved */
|
|
avio_wl32(pb, gxf->nb_fields);
|
|
avio_wl32(pb, 0); /* attributes rw, ro */
|
|
avio_wl32(pb, 0); /* mark in */
|
|
avio_wl32(pb, gxf->nb_fields); /* mark out */
|
|
avio_write(pb, ES_NAME_PATTERN, strlen(ES_NAME_PATTERN));
|
|
avio_wb16(pb, sc->media_info);
|
|
for (j = strlen(ES_NAME_PATTERN)+2; j < 88; j++)
|
|
avio_w8(pb, 0);
|
|
avio_wl32(pb, sc->track_type);
|
|
avio_wl32(pb, sc->sample_rate);
|
|
avio_wl32(pb, sc->sample_size);
|
|
avio_wl32(pb, 0); /* reserved */
|
|
|
|
if (sc == &gxf->timecode_track)
|
|
gxf_write_umf_media_timecode(pb, gxf->tc.drop);
|
|
else {
|
|
AVStream *st = s->streams[i];
|
|
switch (st->codec->codec_id) {
|
|
case AV_CODEC_ID_MPEG1VIDEO:
|
|
case AV_CODEC_ID_MPEG2VIDEO:
|
|
gxf_write_umf_media_mpeg(pb, st);
|
|
break;
|
|
case AV_CODEC_ID_PCM_S16LE:
|
|
gxf_write_umf_media_audio(pb, sc);
|
|
break;
|
|
case AV_CODEC_ID_DVVIDEO:
|
|
gxf_write_umf_media_dv(pb, sc, st);
|
|
break;
|
|
}
|
|
}
|
|
|
|
curpos = avio_tell(pb);
|
|
avio_seek(pb, startpos, SEEK_SET);
|
|
avio_wl16(pb, curpos - startpos);
|
|
avio_seek(pb, curpos, SEEK_SET);
|
|
}
|
|
return avio_tell(pb) - pos;
|
|
}
|
|
|
|
static int gxf_write_umf_packet(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t pos = avio_tell(pb);
|
|
|
|
gxf_write_packet_header(pb, PKT_UMF);
|
|
|
|
/* preamble */
|
|
avio_w8(pb, 3); /* first and last (only) packet */
|
|
avio_wb32(pb, gxf->umf_length); /* data length */
|
|
|
|
gxf->umf_start_offset = avio_tell(pb);
|
|
gxf_write_umf_payload(s);
|
|
gxf_write_umf_material_description(s);
|
|
gxf->umf_track_size = gxf_write_umf_track_description(s);
|
|
gxf->umf_media_size = gxf_write_umf_media_description(s);
|
|
gxf->umf_length = avio_tell(pb) - gxf->umf_start_offset;
|
|
return updatePacketSize(pb, pos);
|
|
}
|
|
|
|
static const int GXF_samples_per_frame[] = { 32768, 0 };
|
|
|
|
static void gxf_init_timecode_track(GXFStreamContext *sc, GXFStreamContext *vsc)
|
|
{
|
|
if (!vsc)
|
|
return;
|
|
|
|
sc->media_type = vsc->sample_rate == 60 ? 7 : 8;
|
|
sc->sample_rate = vsc->sample_rate;
|
|
sc->media_info = ('T'<<8) | '0';
|
|
sc->track_type = 3;
|
|
sc->frame_rate_index = vsc->frame_rate_index;
|
|
sc->lines_index = vsc->lines_index;
|
|
sc->sample_size = 16;
|
|
sc->fields = vsc->fields;
|
|
}
|
|
|
|
static int gxf_init_timecode(AVFormatContext *s, GXFTimecode *tc, const char *tcstr, int fields)
|
|
{
|
|
char c;
|
|
|
|
if (sscanf(tcstr, "%d:%d:%d%c%d", &tc->hh, &tc->mm, &tc->ss, &c, &tc->ff) != 5) {
|
|
av_log(s, AV_LOG_ERROR, "unable to parse timecode, "
|
|
"syntax: hh:mm:ss[:;.]ff\n");
|
|
return -1;
|
|
}
|
|
|
|
tc->color = 0;
|
|
tc->drop = c != ':';
|
|
|
|
if (fields == 2)
|
|
tc->ff = tc->ff * 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gxf_write_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
GXFContext *gxf = s->priv_data;
|
|
GXFStreamContext *vsc = NULL;
|
|
uint8_t tracks[255] = {0};
|
|
int i, media_info = 0;
|
|
int ret;
|
|
AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
|
|
|
|
if (!pb->seekable) {
|
|
av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome\n");
|
|
return -1;
|
|
}
|
|
|
|
gxf->flags |= 0x00080000; /* material is simple clip */
|
|
for (i = 0; i < s->nb_streams; ++i) {
|
|
AVStream *st = s->streams[i];
|
|
GXFStreamContext *sc = av_mallocz(sizeof(*sc));
|
|
if (!sc)
|
|
return AVERROR(ENOMEM);
|
|
st->priv_data = sc;
|
|
|
|
sc->media_type = ff_codec_get_tag(gxf_media_types, st->codec->codec_id);
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE) {
|
|
av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n");
|
|
return -1;
|
|
}
|
|
if (st->codec->sample_rate != 48000) {
|
|
av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n");
|
|
return -1;
|
|
}
|
|
if (st->codec->channels != 1) {
|
|
av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n");
|
|
return -1;
|
|
}
|
|
sc->track_type = 2;
|
|
sc->sample_rate = st->codec->sample_rate;
|
|
avpriv_set_pts_info(st, 64, 1, sc->sample_rate);
|
|
sc->sample_size = 16;
|
|
sc->frame_rate_index = -2;
|
|
sc->lines_index = -2;
|
|
sc->fields = -2;
|
|
gxf->audio_tracks++;
|
|
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
|
|
media_info = 'A';
|
|
} else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (i != 0) {
|
|
av_log(s, AV_LOG_ERROR, "video stream must be the first track\n");
|
|
return -1;
|
|
}
|
|
/* FIXME check from time_base ? */
|
|
if (st->codec->height == 480 || st->codec->height == 512) { /* NTSC or NTSC+VBI */
|
|
sc->frame_rate_index = 5;
|
|
sc->sample_rate = 60;
|
|
gxf->flags |= 0x00000080;
|
|
gxf->time_base = (AVRational){ 1001, 60000 };
|
|
} else if (st->codec->height == 576 || st->codec->height == 608) { /* PAL or PAL+VBI */
|
|
sc->frame_rate_index = 6;
|
|
sc->media_type++;
|
|
sc->sample_rate = 50;
|
|
gxf->flags |= 0x00000040;
|
|
gxf->time_base = (AVRational){ 1, 50 };
|
|
} else {
|
|
av_log(s, AV_LOG_ERROR, "unsupported video resolution, "
|
|
"gxf muxer only accepts PAL or NTSC resolutions currently\n");
|
|
return -1;
|
|
}
|
|
if (!tcr)
|
|
tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
|
|
avpriv_set_pts_info(st, 64, gxf->time_base.num, gxf->time_base.den);
|
|
if (gxf_find_lines_index(st) < 0)
|
|
sc->lines_index = -1;
|
|
sc->sample_size = st->codec->bit_rate;
|
|
sc->fields = 2; /* interlaced */
|
|
|
|
vsc = sc;
|
|
|
|
switch (st->codec->codec_id) {
|
|
case AV_CODEC_ID_MJPEG:
|
|
sc->track_type = 1;
|
|
gxf->flags |= 0x00004000;
|
|
media_info = 'J';
|
|
break;
|
|
case AV_CODEC_ID_MPEG1VIDEO:
|
|
sc->track_type = 9;
|
|
gxf->mpeg_tracks++;
|
|
media_info = 'L';
|
|
break;
|
|
case AV_CODEC_ID_MPEG2VIDEO:
|
|
sc->first_gop_closed = -1;
|
|
sc->track_type = 4;
|
|
gxf->mpeg_tracks++;
|
|
gxf->flags |= 0x00008000;
|
|
media_info = 'M';
|
|
break;
|
|
case AV_CODEC_ID_DVVIDEO:
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P) {
|
|
sc->media_type += 2;
|
|
sc->track_type = 6;
|
|
gxf->flags |= 0x00002000;
|
|
media_info = 'E';
|
|
} else {
|
|
sc->track_type = 5;
|
|
gxf->flags |= 0x00001000;
|
|
media_info = 'D';
|
|
}
|
|
break;
|
|
default:
|
|
av_log(s, AV_LOG_ERROR, "video codec not supported\n");
|
|
return -1;
|
|
}
|
|
}
|
|
/* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
|
|
sc->media_info = media_info<<8 | ('0'+tracks[media_info]++);
|
|
sc->order = s->nb_streams - st->index;
|
|
}
|
|
|
|
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
|
|
return -1;
|
|
|
|
if (tcr && vsc)
|
|
gxf_init_timecode(s, &gxf->tc, tcr->value, vsc->fields);
|
|
|
|
gxf_init_timecode_track(&gxf->timecode_track, vsc);
|
|
gxf->flags |= 0x200000; // time code track is non-drop frame
|
|
|
|
if ((ret = gxf_write_map_packet(s, 0)) < 0)
|
|
return ret;
|
|
gxf_write_flt_packet(s);
|
|
gxf_write_umf_packet(s);
|
|
|
|
gxf->packet_count = 3;
|
|
|
|
avio_flush(pb);
|
|
return 0;
|
|
}
|
|
|
|
static int gxf_write_eos_packet(AVIOContext *pb)
|
|
{
|
|
int64_t pos = avio_tell(pb);
|
|
|
|
gxf_write_packet_header(pb, PKT_EOS);
|
|
return updatePacketSize(pb, pos);
|
|
}
|
|
|
|
static int gxf_write_trailer(AVFormatContext *s)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t end;
|
|
int i;
|
|
int ret;
|
|
|
|
ff_audio_interleave_close(s);
|
|
|
|
gxf_write_eos_packet(pb);
|
|
end = avio_tell(pb);
|
|
avio_seek(pb, 0, SEEK_SET);
|
|
/* overwrite map, flt and umf packets with new values */
|
|
if ((ret = gxf_write_map_packet(s, 1)) < 0)
|
|
return ret;
|
|
gxf_write_flt_packet(s);
|
|
gxf_write_umf_packet(s);
|
|
avio_flush(pb);
|
|
/* update duration in all map packets */
|
|
for (i = 1; i < gxf->map_offsets_nb; i++) {
|
|
avio_seek(pb, gxf->map_offsets[i], SEEK_SET);
|
|
if ((ret = gxf_write_map_packet(s, 1)) < 0)
|
|
return ret;
|
|
avio_flush(pb);
|
|
}
|
|
|
|
avio_seek(pb, end, SEEK_SET);
|
|
|
|
av_freep(&gxf->flt_entries);
|
|
av_freep(&gxf->map_offsets);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gxf_parse_mpeg_frame(GXFStreamContext *sc, const uint8_t *buf, int size)
|
|
{
|
|
uint32_t c=-1;
|
|
int i;
|
|
for(i=0; i<size-4 && c!=0x100; i++){
|
|
c = (c<<8) + buf[i];
|
|
if(c == 0x1B8 && sc->first_gop_closed == -1) /* GOP start code */
|
|
sc->first_gop_closed= (buf[i+4]>>6)&1;
|
|
}
|
|
return (buf[i+1]>>3)&7;
|
|
}
|
|
|
|
static int gxf_write_media_preamble(AVFormatContext *s, AVPacket *pkt, int size)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
GXFStreamContext *sc = st->priv_data;
|
|
unsigned field_nb;
|
|
/* If the video is frame-encoded, the frame numbers shall be represented by
|
|
* even field numbers.
|
|
* see SMPTE360M-2004 6.4.2.1.3 Media field number */
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
field_nb = gxf->nb_fields;
|
|
} else {
|
|
field_nb = av_rescale_rnd(pkt->dts, gxf->time_base.den,
|
|
(int64_t)48000*gxf->time_base.num, AV_ROUND_UP);
|
|
}
|
|
|
|
avio_w8(pb, sc->media_type);
|
|
avio_w8(pb, st->index);
|
|
avio_wb32(pb, field_nb);
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
avio_wb16(pb, 0);
|
|
avio_wb16(pb, size / 2);
|
|
} else if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
|
|
int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size);
|
|
if (frame_type == AV_PICTURE_TYPE_I) {
|
|
avio_w8(pb, 0x0d);
|
|
sc->iframes++;
|
|
} else if (frame_type == AV_PICTURE_TYPE_B) {
|
|
avio_w8(pb, 0x0f);
|
|
sc->bframes++;
|
|
} else {
|
|
avio_w8(pb, 0x0e);
|
|
sc->pframes++;
|
|
}
|
|
avio_wb24(pb, size);
|
|
} else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
|
|
avio_w8(pb, size / 4096);
|
|
avio_wb24(pb, 0);
|
|
} else
|
|
avio_wb32(pb, size);
|
|
avio_wb32(pb, field_nb);
|
|
avio_w8(pb, 1); /* flags */
|
|
avio_w8(pb, 0); /* reserved */
|
|
return 16;
|
|
}
|
|
|
|
static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
int64_t pos = avio_tell(pb);
|
|
int padding = 0;
|
|
unsigned packet_start_offset = avio_tell(pb) / 1024;
|
|
int ret;
|
|
|
|
gxf_write_packet_header(pb, PKT_MEDIA);
|
|
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */
|
|
padding = 4 - pkt->size % 4;
|
|
else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
|
|
padding = GXF_AUDIO_PACKET_SIZE - pkt->size;
|
|
gxf_write_media_preamble(s, pkt, pkt->size + padding);
|
|
avio_write(pb, pkt->data, pkt->size);
|
|
gxf_write_padding(pb, padding);
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (!(gxf->flt_entries_nb % 500)) {
|
|
int err;
|
|
if ((err = av_reallocp_array(&gxf->flt_entries,
|
|
gxf->flt_entries_nb + 500,
|
|
sizeof(*gxf->flt_entries))) < 0) {
|
|
gxf->flt_entries_nb = 0;
|
|
gxf->nb_fields = 0;
|
|
av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
|
|
return err;
|
|
}
|
|
}
|
|
gxf->flt_entries[gxf->flt_entries_nb++] = packet_start_offset;
|
|
gxf->nb_fields += 2; // count fields
|
|
}
|
|
|
|
updatePacketSize(pb, pos);
|
|
|
|
gxf->packet_count++;
|
|
if (gxf->packet_count == 100) {
|
|
if ((ret = gxf_write_map_packet(s, 0)) < 0)
|
|
return ret;
|
|
gxf->packet_count = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gxf_compare_field_nb(AVFormatContext *s, AVPacket *next, AVPacket *cur)
|
|
{
|
|
GXFContext *gxf = s->priv_data;
|
|
AVPacket *pkt[2] = { cur, next };
|
|
int i, field_nb[2];
|
|
GXFStreamContext *sc[2];
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
AVStream *st = s->streams[pkt[i]->stream_index];
|
|
sc[i] = st->priv_data;
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
field_nb[i] = av_rescale_rnd(pkt[i]->dts, gxf->time_base.den,
|
|
(int64_t)48000*gxf->time_base.num, AV_ROUND_UP);
|
|
field_nb[i] &= ~1; // compare against even field number because audio must be before video
|
|
} else
|
|
field_nb[i] = pkt[i]->dts; // dts are field based
|
|
}
|
|
|
|
return field_nb[1] > field_nb[0] ||
|
|
(field_nb[1] == field_nb[0] && sc[1]->order > sc[0]->order);
|
|
}
|
|
|
|
static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
|
|
{
|
|
if (pkt && s->streams[pkt->stream_index]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
pkt->duration = 2; // enforce 2 fields
|
|
return ff_audio_rechunk_interleave(s, out, pkt, flush,
|
|
ff_interleave_packet_per_dts, gxf_compare_field_nb);
|
|
}
|
|
|
|
AVOutputFormat ff_gxf_muxer = {
|
|
.name = "gxf",
|
|
.long_name = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"),
|
|
.extensions = "gxf",
|
|
.priv_data_size = sizeof(GXFContext),
|
|
.audio_codec = AV_CODEC_ID_PCM_S16LE,
|
|
.video_codec = AV_CODEC_ID_MPEG2VIDEO,
|
|
.write_header = gxf_write_header,
|
|
.write_packet = gxf_write_packet,
|
|
.write_trailer = gxf_write_trailer,
|
|
.interleave_packet = gxf_interleave_packet,
|
|
};
|