86329cce |
/*
* GXF muxer. |
406792e7 |
* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> |
86329cce |
* |
b78e7197 |
* This file is part of FFmpeg.
* |
71daa04c |
* 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. |
86329cce |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
86329cce |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
71daa04c |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. |
86329cce |
* |
71daa04c |
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software |
b78e7197 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
86329cce |
*/
|
07108caf |
#include "libavutil/avassert.h" |
3383a53e |
#include "libavutil/intfloat.h" |
070a40f1 |
#include "libavutil/opt.h" |
0ebcdf5c |
#include "libavutil/mathematics.h" |
e2407556 |
#include "libavutil/timecode.h" |
86329cce |
#include "avformat.h" |
c3f9ebf7 |
#include "internal.h" |
86329cce |
#include "gxf.h" |
63601677 |
#include "audiointerleave.h" |
86329cce |
#define GXF_AUDIO_PACKET_SIZE 65536
|
070a40f1 |
#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;
|
86329cce |
typedef struct GXFStreamContext { |
63601677 |
AudioInterleaveContext aic; |
86329cce |
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; |
a88f0f16 |
int b_per_i_or_p; ///< number of B frames per I frame or P frame |
2b7e230b |
int first_gop_closed; |
a96b1a90 |
unsigned order; ///< interleaving order |
86329cce |
} GXFStreamContext;
typedef struct GXFContext { |
070a40f1 |
AVClass *av_class; |
032d8aec |
uint32_t nb_fields; |
86329cce |
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; |
a96b1a90 |
AVRational time_base; |
86329cce |
int flags; |
46a7e3ec |
GXFStreamContext timecode_track; |
aaa43de3 |
unsigned *flt_entries; ///< offsets of packets /1024, starts after 2nd video field
unsigned flt_entries_nb; |
0c8f7727 |
uint64_t *map_offsets; ///< offset of map packets
unsigned map_offsets_nb;
unsigned packet_count; |
070a40f1 |
GXFTimecode tc; |
86329cce |
} GXFContext;
|
4070629d |
static const struct {
int height, index;
} gxf_lines_tab[] = { |
86329cce |
{ 480, 1 }, /* NTSC */
{ 512, 1 }, /* NTSC + VBI */
{ 576, 2 }, /* PAL */
{ 608, 2 }, /* PAL + VBI */
{ 1080, 4 },
{ 720, 6 },
};
|
7caf0cc6 |
static const AVCodecTag gxf_media_types[] = { |
36ef5369 |
{ 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 }, |
86329cce |
};
|
6b4fab72 |
#define SERVER_PATH "EXT:/PDR/default/"
#define ES_NAME_PATTERN "EXT:/PDR/default/ES." |
86329cce |
|
6b43d2d0 |
static int gxf_find_lines_index(AVStream *st) |
86329cce |
{ |
6b43d2d0 |
GXFStreamContext *sc = st->priv_data; |
86329cce |
int i;
for (i = 0; i < 6; ++i) { |
6b43d2d0 |
if (st->codec->height == gxf_lines_tab[i].height) {
sc->lines_index = gxf_lines_tab[i].index; |
86329cce |
return 0;
}
}
return -1;
}
|
ae628ec1 |
static void gxf_write_padding(AVIOContext *pb, int64_t to_pad) |
86329cce |
{ |
0e15b7b0 |
for (; to_pad > 0; to_pad--) { |
77eb5504 |
avio_w8(pb, 0); |
86329cce |
}
}
|
ae628ec1 |
static int64_t updatePacketSize(AVIOContext *pb, int64_t pos) |
86329cce |
{ |
bc5c918e |
int64_t curpos; |
86329cce |
int size;
|
a2704c97 |
size = avio_tell(pb) - pos; |
86329cce |
if (size % 4) {
gxf_write_padding(pb, 4 - size % 4); |
a2704c97 |
size = avio_tell(pb) - pos; |
86329cce |
} |
a2704c97 |
curpos = avio_tell(pb); |
6b4aa5da |
avio_seek(pb, pos + 6, SEEK_SET); |
77eb5504 |
avio_wb32(pb, size); |
6b4aa5da |
avio_seek(pb, curpos, SEEK_SET); |
86329cce |
return curpos - pos;
}
|
ae628ec1 |
static int64_t updateSize(AVIOContext *pb, int64_t pos) |
86329cce |
{ |
bc5c918e |
int64_t curpos; |
86329cce |
|
a2704c97 |
curpos = avio_tell(pb); |
6b4aa5da |
avio_seek(pb, pos, SEEK_SET); |
77eb5504 |
avio_wb16(pb, curpos - pos - 2); |
6b4aa5da |
avio_seek(pb, curpos, SEEK_SET); |
86329cce |
return curpos - pos;
}
|
ae628ec1 |
static void gxf_write_packet_header(AVIOContext *pb, GXFPktType type) |
86329cce |
{ |
77eb5504 |
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 */ |
86329cce |
}
|
ae628ec1 |
static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st) |
86329cce |
{ |
6b43d2d0 |
GXFStreamContext *sc = st->priv_data; |
86329cce |
char buffer[1024]; |
15a4e8b8 |
int size, starting_line; |
86329cce |
|
6b43d2d0 |
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++; |
68a7aaff |
} |
6b43d2d0 |
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 */ |
86329cce |
} |
6b43d2d0 |
if (st->codec->height == 512 || st->codec->height == 608) |
15a4e8b8 |
starting_line = 7; // VBI |
6b43d2d0 |
else if (st->codec->height == 480) |
15a4e8b8 |
starting_line = 20;
else
starting_line = 23; // default PAL
|
eb336cb8 |
size = snprintf(buffer, sizeof(buffer), "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n" |
15a4e8b8 |
"Pix 0\nCf %d\nCg %d\nSl %d\nnl16 %d\nVi 1\nf1 1\n", |
6b43d2d0 |
(float)st->codec->bit_rate, sc->p_per_gop, sc->b_per_i_or_p, |
716d413c |
st->codec->pix_fmt == AV_PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1, |
8a451afe |
starting_line, (st->codec->height + 15) / 16); |
07108caf |
av_assert0(size < sizeof(buffer)); |
77eb5504 |
avio_w8(pb, TRACK_MPG_AUX);
avio_w8(pb, size + 1);
avio_write(pb, (uint8_t *)buffer, size + 1); |
86329cce |
return size + 3;
}
|
070a40f1 |
static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFContext *gxf) |
86329cce |
{ |
070a40f1 |
uint32_t timecode = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
gxf->tc.hh, gxf->tc.mm,
gxf->tc.ss, gxf->tc.ff);
avio_wl32(pb, timecode); |
86329cce |
/* reserved */ |
070a40f1 |
avio_wl32(pb, 0); |
86329cce |
return 8;
}
|
46a7e3ec |
static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index) |
86329cce |
{ |
070a40f1 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
bc5c918e |
int64_t pos; |
46a7e3ec |
int mpeg = sc->track_type == 4 || sc->track_type == 9; |
86329cce |
/* track description section */ |
77eb5504 |
avio_w8(pb, sc->media_type + 0x80);
avio_w8(pb, index + 0xC0); |
86329cce |
|
a2704c97 |
pos = avio_tell(pb); |
77eb5504 |
avio_wb16(pb, 0); /* size */ |
86329cce |
/* media file name */ |
77eb5504 |
avio_w8(pb, TRACK_NAME);
avio_w8(pb, strlen(ES_NAME_PATTERN) + 3); |
bbc413f9 |
avio_write(pb, ES_NAME_PATTERN, sizeof(ES_NAME_PATTERN) - 1); |
77eb5504 |
avio_wb16(pb, sc->media_info);
avio_w8(pb, 0); |
86329cce |
|
46a7e3ec |
if (!mpeg) { |
86329cce |
/* auxiliary information */ |
77eb5504 |
avio_w8(pb, TRACK_AUX);
avio_w8(pb, 8); |
46a7e3ec |
if (sc->track_type == 3) |
070a40f1 |
gxf_write_timecode_auxiliary(pb, gxf); |
86329cce |
else |
77eb5504 |
avio_wl64(pb, 0); |
86329cce |
}
/* file system version */ |
77eb5504 |
avio_w8(pb, TRACK_VER);
avio_w8(pb, 4);
avio_wb32(pb, 0); |
86329cce |
|
46a7e3ec |
if (mpeg)
gxf_write_mpeg_auxiliary(pb, s->streams[index]); |
86329cce |
/* frame rate */ |
77eb5504 |
avio_w8(pb, TRACK_FPS);
avio_w8(pb, 4);
avio_wb32(pb, sc->frame_rate_index); |
86329cce |
/* lines per frame */ |
77eb5504 |
avio_w8(pb, TRACK_LINES);
avio_w8(pb, 4);
avio_wb32(pb, sc->lines_index); |
86329cce |
/* fields per frame */ |
77eb5504 |
avio_w8(pb, TRACK_FPF);
avio_w8(pb, 4);
avio_wb32(pb, sc->fields); |
86329cce |
return updateSize(pb, pos);
}
|
6b43d2d0 |
static int gxf_write_material_data_section(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
bc5c918e |
int64_t pos; |
bbc413f9 |
int len; |
6b43d2d0 |
const char *filename = strrchr(s->filename, '/'); |
86329cce |
|
a2704c97 |
pos = avio_tell(pb); |
77eb5504 |
avio_wb16(pb, 0); /* size */ |
86329cce |
/* name */
if (filename)
filename++;
else |
6b43d2d0 |
filename = s->filename; |
bbc413f9 |
len = strlen(filename);
|
77eb5504 |
avio_w8(pb, MAT_NAME); |
bbc413f9 |
avio_w8(pb, strlen(SERVER_PATH) + len + 1);
avio_write(pb, SERVER_PATH, sizeof(SERVER_PATH) - 1);
avio_write(pb, filename, len); |
77eb5504 |
avio_w8(pb, 0); |
86329cce |
/* first field */ |
77eb5504 |
avio_w8(pb, MAT_FIRST_FIELD);
avio_w8(pb, 4);
avio_wb32(pb, 0); |
86329cce |
/* last field */ |
77eb5504 |
avio_w8(pb, MAT_LAST_FIELD);
avio_w8(pb, 4);
avio_wb32(pb, gxf->nb_fields); |
86329cce |
/* reserved */ |
77eb5504 |
avio_w8(pb, MAT_MARK_IN);
avio_w8(pb, 4);
avio_wb32(pb, 0); |
86329cce |
|
77eb5504 |
avio_w8(pb, MAT_MARK_OUT);
avio_w8(pb, 4);
avio_wb32(pb, gxf->nb_fields); |
86329cce |
/* estimated size */ |
77eb5504 |
avio_w8(pb, MAT_SIZE);
avio_w8(pb, 4); |
76aa876e |
avio_wb32(pb, avio_size(pb) / 1024); |
86329cce |
return updateSize(pb, pos);
}
|
6b43d2d0 |
static int gxf_write_track_description_section(AVFormatContext *s) |
86329cce |
{ |
46a7e3ec |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
bc5c918e |
int64_t pos; |
86329cce |
int i;
|
a2704c97 |
pos = avio_tell(pb); |
77eb5504 |
avio_wb16(pb, 0); /* size */ |
6b43d2d0 |
for (i = 0; i < s->nb_streams; ++i) |
46a7e3ec |
gxf_write_track_description(s, s->streams[i]->priv_data, i);
gxf_write_track_description(s, &gxf->timecode_track, s->nb_streams);
|
86329cce |
return updateSize(pb, pos);
}
|
0c8f7727 |
static int gxf_write_map_packet(AVFormatContext *s, int rewrite) |
86329cce |
{ |
0c8f7727 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
a2704c97 |
int64_t pos = avio_tell(pb); |
86329cce |
|
0c8f7727 |
if (!rewrite) {
if (!(gxf->map_offsets_nb % 30)) { |
af84d9bb |
gxf->map_offsets = av_realloc_f(gxf->map_offsets,
sizeof(*gxf->map_offsets),
gxf->map_offsets_nb+30); |
0c8f7727 |
if (!gxf->map_offsets) {
av_log(s, AV_LOG_ERROR, "could not realloc map offsets\n");
return -1;
}
}
gxf->map_offsets[gxf->map_offsets_nb++] = pos; // do not increment here
}
|
86329cce |
gxf_write_packet_header(pb, PKT_MAP);
/* preamble */ |
77eb5504 |
avio_w8(pb, 0xE0); /* version */
avio_w8(pb, 0xFF); /* reserved */ |
86329cce |
|
6b43d2d0 |
gxf_write_material_data_section(s);
gxf_write_track_description_section(s); |
86329cce |
return updatePacketSize(pb, pos);
}
|
6b43d2d0 |
static int gxf_write_flt_packet(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
a2704c97 |
int64_t pos = avio_tell(pb); |
aaa43de3 |
int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1; |
c6d04add |
int flt_entries = gxf->nb_fields / fields_per_flt; |
aaa43de3 |
int i = 0; |
86329cce |
gxf_write_packet_header(pb, PKT_FLT);
|
77eb5504 |
avio_wl32(pb, fields_per_flt); /* number of fields */
avio_wl32(pb, flt_entries); /* number of active flt entries */ |
86329cce |
|
aaa43de3 |
if (gxf->flt_entries) {
for (i = 0; i < flt_entries; i++) |
77eb5504 |
avio_wl32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]); |
86329cce |
} |
aaa43de3 |
for (; i < 1000; i++) |
77eb5504 |
avio_wl32(pb, 0); |
aaa43de3 |
|
86329cce |
return updatePacketSize(pb, pos);
}
|
6b43d2d0 |
static int gxf_write_umf_material_description(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
a96b1a90 |
int timecode_base = gxf->time_base.den == 60000 ? 60 : 50; |
5f847bf6 |
int64_t timestamp = 0;
AVDictionaryEntry *t; |
070a40f1 |
uint64_t nb_fields;
uint32_t timecode_in; // timecode at mark in
uint32_t timecode_out; // timecode at mark out |
5f847bf6 |
|
001d668d |
if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
timestamp = ff_iso8601_to_unix_time(t->value); |
6b43d2d0 |
|
070a40f1 |
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); |
6b43d2d0 |
|
77eb5504 |
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 */ |
070a40f1 |
avio_wl32(pb, timecode_in); /* timecode mark in */
avio_wl32(pb, timecode_out); /* timecode mark out */ |
5f847bf6 |
avio_wl64(pb, timestamp); /* modification time */
avio_wl64(pb, timestamp); /* creation time */ |
77eb5504 |
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); |
86329cce |
return 48;
}
|
6b43d2d0 |
static int gxf_write_umf_payload(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
6b43d2d0 |
|
77eb5504 |
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 */ |
86329cce |
return 48;
}
|
6b43d2d0 |
static int gxf_write_umf_track_description(AVFormatContext *s) |
86329cce |
{ |
ae628ec1 |
AVIOContext *pb = s->pb; |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
a2704c97 |
int64_t pos = avio_tell(pb); |
86329cce |
int i;
|
6b43d2d0 |
gxf->umf_track_offset = pos - gxf->umf_start_offset;
for (i = 0; i < s->nb_streams; ++i) { |
33605366 |
GXFStreamContext *sc = s->streams[i]->priv_data; |
77eb5504 |
avio_wl16(pb, sc->media_info);
avio_wl16(pb, 1); |
86329cce |
} |
46a7e3ec |
|
77eb5504 |
avio_wl16(pb, gxf->timecode_track.media_info);
avio_wl16(pb, 1); |
46a7e3ec |
|
a2704c97 |
return avio_tell(pb) - pos; |
86329cce |
}
|
ae628ec1 |
static int gxf_write_umf_media_mpeg(AVIOContext *pb, AVStream *st) |
86329cce |
{ |
6b43d2d0 |
GXFStreamContext *sc = st->priv_data;
|
716d413c |
if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P) |
77eb5504 |
avio_wl32(pb, 2); |
86329cce |
else |
77eb5504 |
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); |
36ef5369 |
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) |
77eb5504 |
avio_wl32(pb, 2); |
36ef5369 |
else if (st->codec->codec_id == AV_CODEC_ID_MPEG1VIDEO) |
77eb5504 |
avio_wl32(pb, 1); |
86329cce |
else |
77eb5504 |
avio_wl32(pb, 0);
avio_wl32(pb, 0); /* reserved */ |
86329cce |
return 32;
}
|
070a40f1 |
static int gxf_write_umf_media_timecode(AVIOContext *pb, int drop) |
86329cce |
{ |
070a40f1 |
avio_wl32(pb, drop); /* drop frame */ |
77eb5504 |
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 */ |
86329cce |
return 32;
}
|
ae628ec1 |
static int gxf_write_umf_media_dv(AVIOContext *pb, GXFStreamContext *sc) |
86329cce |
{
int i;
for (i = 0; i < 8; i++) { |
77eb5504 |
avio_wb32(pb, 0); |
86329cce |
}
return 32;
}
|
ae628ec1 |
static int gxf_write_umf_media_audio(AVIOContext *pb, GXFStreamContext *sc) |
86329cce |
{ |
3383a53e |
avio_wl64(pb, av_double2int(1)); /* sound level to begin to */
avio_wl64(pb, av_double2int(1)); /* sound level to begin to */ |
77eb5504 |
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 */ |
86329cce |
return 32;
}
|
6b43d2d0 |
static int gxf_write_umf_media_description(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
bc5c918e |
int64_t pos; |
6b4fab72 |
int i, j; |
86329cce |
|
a2704c97 |
pos = avio_tell(pb); |
6b43d2d0 |
gxf->umf_media_offset = pos - gxf->umf_start_offset; |
46a7e3ec |
for (i = 0; i <= s->nb_streams; ++i) {
GXFStreamContext *sc; |
bc5c918e |
int64_t startpos, curpos; |
86329cce |
|
46a7e3ec |
if (i == s->nb_streams)
sc = &gxf->timecode_track;
else
sc = s->streams[i]->priv_data;
|
a2704c97 |
startpos = avio_tell(pb); |
77eb5504 |
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); |
591db22d |
for (j = strlen(ES_NAME_PATTERN)+2; j < 88; j++) |
77eb5504 |
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 */ |
46a7e3ec |
if (sc == &gxf->timecode_track) |
070a40f1 |
gxf_write_umf_media_timecode(pb, gxf->tc.drop); |
46a7e3ec |
else {
AVStream *st = s->streams[i]; |
af79f1ae |
switch (st->codec->codec_id) { |
36ef5369 |
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO: |
af79f1ae |
gxf_write_umf_media_mpeg(pb, st);
break; |
36ef5369 |
case AV_CODEC_ID_PCM_S16LE: |
af79f1ae |
gxf_write_umf_media_audio(pb, sc);
break; |
36ef5369 |
case AV_CODEC_ID_DVVIDEO: |
af79f1ae |
gxf_write_umf_media_dv(pb, sc);
break;
} |
46a7e3ec |
}
|
a2704c97 |
curpos = avio_tell(pb); |
6b4aa5da |
avio_seek(pb, startpos, SEEK_SET); |
77eb5504 |
avio_wl16(pb, curpos - startpos); |
6b4aa5da |
avio_seek(pb, curpos, SEEK_SET); |
86329cce |
} |
a2704c97 |
return avio_tell(pb) - pos; |
86329cce |
}
|
6b43d2d0 |
static int gxf_write_umf_packet(AVFormatContext *s) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
a2704c97 |
int64_t pos = avio_tell(pb); |
86329cce |
gxf_write_packet_header(pb, PKT_UMF);
/* preamble */ |
77eb5504 |
avio_w8(pb, 3); /* first and last (only) packet */
avio_wb32(pb, gxf->umf_length); /* data length */ |
6b43d2d0 |
|
a2704c97 |
gxf->umf_start_offset = avio_tell(pb); |
6b43d2d0 |
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); |
a2704c97 |
gxf->umf_length = avio_tell(pb) - gxf->umf_start_offset; |
86329cce |
return updatePacketSize(pb, pos);
}
|
63601677 |
static const int GXF_samples_per_frame[] = { 32768, 0 };
|
46a7e3ec |
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;
}
|
6b35f1a2 |
static int gxf_init_timecode(AVFormatContext *s, GXFTimecode *tc, const char *tcstr, int fields) |
070a40f1 |
{
char c;
|
6b35f1a2 |
if (sscanf(tcstr, "%d:%d:%d%c%d", &tc->hh, &tc->mm, &tc->ss, &c, &tc->ff) != 5) { |
070a40f1 |
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;
}
|
86329cce |
static int gxf_write_header(AVFormatContext *s)
{ |
ae628ec1 |
AVIOContext *pb = s->pb; |
86329cce |
GXFContext *gxf = s->priv_data; |
46a7e3ec |
GXFStreamContext *vsc = NULL; |
33605366 |
uint8_t tracks[255] = {0};
int i, media_info = 0; |
6b35f1a2 |
AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0); |
86329cce |
|
8978feda |
if (!pb->seekable) { |
08277a45 |
av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome\n"); |
0c8f7727 |
return -1;
}
|
86329cce |
gxf->flags |= 0x00080000; /* material is simple clip */
for (i = 0; i < s->nb_streams; ++i) {
AVStream *st = s->streams[i]; |
5efa932d |
GXFStreamContext *sc = av_mallocz(sizeof(*sc));
if (!sc)
return AVERROR(ENOMEM);
st->priv_data = sc; |
86329cce |
|
1a40491e |
sc->media_type = ff_codec_get_tag(gxf_media_types, st->codec->codec_id); |
72415b2a |
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
36ef5369 |
if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE) { |
86329cce |
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; |
c3f9ebf7 |
avpriv_set_pts_info(st, 64, 1, sc->sample_rate); |
86329cce |
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 */ |
33605366 |
media_info = 'A'; |
72415b2a |
} else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
a96b1a90 |
if (i != 0) {
av_log(s, AV_LOG_ERROR, "video stream must be the first track\n");
return -1;
} |
86329cce |
/* FIXME check from time_base ? */ |
6b43d2d0 |
if (st->codec->height == 480 || st->codec->height == 512) { /* NTSC or NTSC+VBI */ |
86329cce |
sc->frame_rate_index = 5;
sc->sample_rate = 60;
gxf->flags |= 0x00000080; |
a96b1a90 |
gxf->time_base = (AVRational){ 1001, 60000 }; |
eeeae2bf |
} else if (st->codec->height == 576 || st->codec->height == 608) { /* PAL or PAL+VBI */ |
86329cce |
sc->frame_rate_index = 6;
sc->media_type++;
sc->sample_rate = 50;
gxf->flags |= 0x00000040; |
a96b1a90 |
gxf->time_base = (AVRational){ 1, 50 }; |
eeeae2bf |
} else {
av_log(s, AV_LOG_ERROR, "unsupported video resolution, "
"gxf muxer only accepts PAL or NTSC resolutions currently\n");
return -1; |
86329cce |
} |
6b35f1a2 |
if (!tcr)
tcr = av_dict_get(st->metadata, "timecode", NULL, 0); |
c3f9ebf7 |
avpriv_set_pts_info(st, 64, gxf->time_base.num, gxf->time_base.den); |
6b43d2d0 |
if (gxf_find_lines_index(st) < 0) |
86329cce |
sc->lines_index = -1;
sc->sample_size = st->codec->bit_rate;
sc->fields = 2; /* interlaced */ |
46a7e3ec |
vsc = sc;
|
6b43d2d0 |
switch (st->codec->codec_id) { |
36ef5369 |
case AV_CODEC_ID_MJPEG: |
33605366 |
sc->track_type = 1;
gxf->flags |= 0x00004000;
media_info = 'J';
break; |
36ef5369 |
case AV_CODEC_ID_MPEG1VIDEO: |
33605366 |
sc->track_type = 9;
gxf->mpeg_tracks++;
media_info = 'L';
break; |
36ef5369 |
case AV_CODEC_ID_MPEG2VIDEO: |
afbbe5e3 |
sc->first_gop_closed = -1; |
86329cce |
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000; |
33605366 |
media_info = 'M'; |
86329cce |
break; |
36ef5369 |
case AV_CODEC_ID_DVVIDEO: |
716d413c |
if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P) { |
86329cce |
sc->media_type += 2;
sc->track_type = 6;
gxf->flags |= 0x00002000; |
33605366 |
media_info = 'E'; |
86329cce |
} else {
sc->track_type = 5;
gxf->flags |= 0x00001000; |
33605366 |
media_info = 'D'; |
86329cce |
}
break;
default: |
99fd05cb |
av_log(s, AV_LOG_ERROR, "video codec not supported\n"); |
86329cce |
return -1;
}
} |
33605366 |
/* 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]++); |
a96b1a90 |
sc->order = s->nb_streams - st->index; |
86329cce |
} |
63601677 |
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
return -1;
|
ba393030 |
if (tcr && vsc) |
6b35f1a2 |
gxf_init_timecode(s, &gxf->tc, tcr->value, vsc->fields); |
070a40f1 |
|
46a7e3ec |
gxf_init_timecode_track(&gxf->timecode_track, vsc);
gxf->flags |= 0x200000; // time code track is non-drop frame
|
0c8f7727 |
gxf_write_map_packet(s, 0); |
aaa43de3 |
gxf_write_flt_packet(s); |
6b43d2d0 |
gxf_write_umf_packet(s); |
0c8f7727 |
gxf->packet_count = 3;
|
b7f2fdde |
avio_flush(pb); |
86329cce |
return 0;
}
|
ae628ec1 |
static int gxf_write_eos_packet(AVIOContext *pb) |
86329cce |
{ |
a2704c97 |
int64_t pos = avio_tell(pb); |
86329cce |
gxf_write_packet_header(pb, PKT_EOS);
return updatePacketSize(pb, pos);
}
static int gxf_write_trailer(AVFormatContext *s)
{ |
aaa43de3 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
bc5c918e |
int64_t end; |
0c8f7727 |
int i; |
86329cce |
|
63601677 |
ff_audio_interleave_close(s); |
86329cce |
|
6b43d2d0 |
gxf_write_eos_packet(pb); |
a2704c97 |
end = avio_tell(pb); |
6b4aa5da |
avio_seek(pb, 0, SEEK_SET); |
aaa43de3 |
/* overwrite map, flt and umf packets with new values */ |
0c8f7727 |
gxf_write_map_packet(s, 1); |
aaa43de3 |
gxf_write_flt_packet(s); |
6b43d2d0 |
gxf_write_umf_packet(s); |
b7f2fdde |
avio_flush(pb); |
0c8f7727 |
/* update duration in all map packets */
for (i = 1; i < gxf->map_offsets_nb; i++) { |
6b4aa5da |
avio_seek(pb, gxf->map_offsets[i], SEEK_SET); |
0c8f7727 |
gxf_write_map_packet(s, 1); |
b7f2fdde |
avio_flush(pb); |
0c8f7727 |
}
|
6b4aa5da |
avio_seek(pb, end, SEEK_SET); |
aaa43de3 |
av_freep(&gxf->flt_entries); |
0c8f7727 |
av_freep(&gxf->map_offsets); |
aaa43de3 |
|
86329cce |
return 0;
}
|
76c9cb0a |
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]; |
afbbe5e3 |
if(c == 0x1B8 && sc->first_gop_closed == -1) /* GOP start code */ |
2b7e230b |
sc->first_gop_closed= (buf[i+4]>>6)&1; |
76c9cb0a |
}
return (buf[i+1]>>3)&7;
}
|
6b43d2d0 |
static int gxf_write_media_preamble(AVFormatContext *s, AVPacket *pkt, int size) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
6b43d2d0 |
AVStream *st = s->streams[pkt->stream_index];
GXFStreamContext *sc = st->priv_data; |
2ead1eb0 |
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 */ |
72415b2a |
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
6b43d2d0 |
field_nb = gxf->nb_fields; |
2ead1eb0 |
} else { |
a96b1a90 |
field_nb = av_rescale_rnd(pkt->dts, gxf->time_base.den,
(int64_t)48000*gxf->time_base.num, AV_ROUND_UP); |
2ead1eb0 |
} |
86329cce |
|
77eb5504 |
avio_w8(pb, sc->media_type);
avio_w8(pb, st->index);
avio_wb32(pb, field_nb); |
72415b2a |
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
77eb5504 |
avio_wb16(pb, 0);
avio_wb16(pb, size / 2); |
36ef5369 |
} else if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
76c9cb0a |
int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size); |
ce5e49b0 |
if (frame_type == AV_PICTURE_TYPE_I) { |
77eb5504 |
avio_w8(pb, 0x0d); |
86329cce |
sc->iframes++; |
ce5e49b0 |
} else if (frame_type == AV_PICTURE_TYPE_B) { |
77eb5504 |
avio_w8(pb, 0x0f); |
86329cce |
sc->bframes++;
} else { |
77eb5504 |
avio_w8(pb, 0x0e); |
86329cce |
sc->pframes++;
} |
77eb5504 |
avio_wb24(pb, size); |
36ef5369 |
} else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) { |
77eb5504 |
avio_w8(pb, size / 4096);
avio_wb24(pb, 0); |
86329cce |
} else |
77eb5504 |
avio_wb32(pb, size);
avio_wb32(pb, field_nb);
avio_w8(pb, 1); /* flags */
avio_w8(pb, 0); /* reserved */ |
86329cce |
return 16;
}
|
cd34fd9c |
static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt) |
86329cce |
{ |
6b43d2d0 |
GXFContext *gxf = s->priv_data; |
ae628ec1 |
AVIOContext *pb = s->pb; |
6b43d2d0 |
AVStream *st = s->streams[pkt->stream_index]; |
a2704c97 |
int64_t pos = avio_tell(pb); |
86329cce |
int padding = 0; |
a2704c97 |
int packet_start_offset = avio_tell(pb) / 1024; |
86329cce |
gxf_write_packet_header(pb, PKT_MEDIA); |
36ef5369 |
if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */ |
86329cce |
padding = 4 - pkt->size % 4; |
72415b2a |
else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) |
3068f1c8 |
padding = GXF_AUDIO_PACKET_SIZE - pkt->size; |
6b43d2d0 |
gxf_write_media_preamble(s, pkt, pkt->size + padding); |
77eb5504 |
avio_write(pb, pkt->data, pkt->size); |
86329cce |
gxf_write_padding(pb, padding); |
507ff760 |
|
72415b2a |
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
aaa43de3 |
if (!(gxf->flt_entries_nb % 500)) { |
af84d9bb |
gxf->flt_entries = av_realloc_f(gxf->flt_entries,
sizeof(*gxf->flt_entries),
gxf->flt_entries_nb+500); |
aaa43de3 |
if (!gxf->flt_entries) {
av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
return -1;
}
} |
ad4c3c68 |
gxf->flt_entries[gxf->flt_entries_nb++] = packet_start_offset; |
6b43d2d0 |
gxf->nb_fields += 2; // count fields |
aaa43de3 |
} |
507ff760 |
|
0c8f7727 |
updatePacketSize(pb, pos);
gxf->packet_count++;
if (gxf->packet_count == 100) {
gxf_write_map_packet(s, 0);
gxf->packet_count = 0;
}
|
b7f2fdde |
avio_flush(pb); |
86329cce |
|
0c8f7727 |
return 0; |
86329cce |
}
|
a96b1a90 |
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; |
72415b2a |
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
a96b1a90 |
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);
}
|
86329cce |
static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
{ |
72415b2a |
if (pkt && s->streams[pkt->stream_index]->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
a96b1a90 |
pkt->duration = 2; // enforce 2 fields |
16e3b0b3 |
return ff_audio_rechunk_interleave(s, out, pkt, flush, |
a6733202 |
ff_interleave_packet_per_dts, gxf_compare_field_nb); |
86329cce |
}
|
c6610a21 |
AVOutputFormat ff_gxf_muxer = { |
dfc2c4d9 |
.name = "gxf", |
0177b7d2 |
.long_name = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"), |
dfc2c4d9 |
.extensions = "gxf",
.priv_data_size = sizeof(GXFContext), |
36ef5369 |
.audio_codec = AV_CODEC_ID_PCM_S16LE,
.video_codec = AV_CODEC_ID_MPEG2VIDEO, |
dfc2c4d9 |
.write_header = gxf_write_header,
.write_packet = gxf_write_packet,
.write_trailer = gxf_write_trailer,
.interleave_packet = gxf_interleave_packet, |
86329cce |
}; |