* GXF muxer.
* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * 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/intfloat.h"
+#include "libavutil/opt.h"
#include "libavutil/mathematics.h"
+#include "libavcodec/timecode.h"
#include "avformat.h"
#include "internal.h"
#include "gxf.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;
+ char *str;
+} GXFTimecode;
+
typedef struct GXFStreamContext {
AudioInterleaveContext aic;
uint32_t track_type;
} GXFStreamContext;
typedef struct GXFContext {
+ AVClass *av_class;
uint32_t nb_fields;
uint16_t audio_tracks;
uint16_t mpeg_tracks;
uint64_t *map_offsets; ///< offset of map packets
unsigned map_offsets_nb;
unsigned packet_count;
+ GXFTimecode tc;
} GXFContext;
static const struct {
return size + 3;
}
-static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFStreamContext *sc)
+static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFContext *gxf)
{
- avio_w8(pb, 0); /* fields */
- avio_w8(pb, 0); /* seconds */
- avio_w8(pb, 0); /* minutes */
- avio_w8(pb, 0); /* flags + hours */
+ 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);
/* reserved */
- avio_wb32(pb, 0);
+ 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;
int mpeg = sc->track_type == 4 || sc->track_type == 9;
avio_w8(pb, TRACK_AUX);
avio_w8(pb, 8);
if (sc->track_type == 3)
- gxf_write_timecode_auxiliary(pb, sc);
+ gxf_write_timecode_auxiliary(pb, gxf);
else
avio_wl64(pb, 0);
}
if (!rewrite) {
if (!(gxf->map_offsets_nb % 30)) {
- gxf->map_offsets = av_realloc(gxf->map_offsets,
- (gxf->map_offsets_nb+30)*sizeof(*gxf->map_offsets));
+ gxf->map_offsets = av_realloc_f(gxf->map_offsets,
+ sizeof(*gxf->map_offsets),
+ gxf->map_offsets_nb+30);
if (!gxf->map_offsets) {
av_log(s, AV_LOG_ERROR, "could not realloc map offsets\n");
return -1;
int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
int64_t timestamp = 0;
AVDictionaryEntry *t;
- uint32_t timecode;
+ 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);
- // XXX drop frame
- timecode =
- gxf->nb_fields / (timecode_base * 3600) % 24 << 24 | // hours
- gxf->nb_fields / (timecode_base * 60) % 60 << 16 | // minutes
- gxf->nb_fields / timecode_base % 60 << 8 | // seconds
- gxf->nb_fields % timecode_base; // fields
+ 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, 0); /* timecode mark in */
- avio_wl32(pb, timecode); /* timecode 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 */
return 32;
}
-static int gxf_write_umf_media_timecode(AVIOContext *pb, GXFStreamContext *sc)
+static int gxf_write_umf_media_timecode(AVIOContext *pb, int drop)
{
- avio_wl32(pb, 1); /* non drop frame */
+ 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 */
if (sc == &gxf->timecode_track)
- gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */
+ gxf_write_umf_media_timecode(pb, gxf->tc.drop);
else {
AVStream *st = s->streams[i];
switch (st->codec->codec_id) {
sc->fields = vsc->fields;
}
+static int gxf_init_timecode(AVFormatContext *s, GXFTimecode *tc, int fields)
+{
+ char c;
+
+ if (sscanf(tc->str, "%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;
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
return -1;
+ if (gxf->tc.str) {
+ gxf_init_timecode(s, &gxf->tc, vsc->fields);
+ }
+
gxf_init_timecode_track(&gxf->timecode_track, vsc);
gxf->flags |= 0x200000; // time code track is non-drop frame
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (!(gxf->flt_entries_nb % 500)) {
- gxf->flt_entries = av_realloc(gxf->flt_entries,
- (gxf->flt_entries_nb+500)*sizeof(*gxf->flt_entries));
+ gxf->flt_entries = av_realloc_f(gxf->flt_entries,
+ sizeof(*gxf->flt_entries),
+ gxf->flt_entries_nb+500);
if (!gxf->flt_entries) {
av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
return -1;
av_interleave_packet_per_dts, gxf_compare_field_nb);
}
+static const AVOption options[] = {
+ { TIMECODE_OPT(GXFContext, AV_OPT_FLAG_ENCODING_PARAM) },
+ { NULL }
+};
+
+static const AVClass gxf_muxer_class = {
+ .class_name = "GXF muxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVOutputFormat ff_gxf_muxer = {
.name = "gxf",
.long_name = NULL_IF_CONFIG_SMALL("GXF format"),
.write_packet = gxf_write_packet,
.write_trailer = gxf_write_trailer,
.interleave_packet = gxf_interleave_packet,
+ .priv_class = &gxf_muxer_class,
};
projects / ffmpeg / blobdiff