mirror of https://git.ffmpeg.org/ffmpeg.git
gxfenc: support timecode option
Reviewed-by: Baptiste Coudurier
This commit is contained in:
Matthieu Bouron
Michael Niedermayer
parent
a99dbe014d
commit
070a40f1b7
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@ -20,7 +20,9 @@
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*/
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#include "libavutil/intfloat_readwrite.h"
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#include "libavutil/opt.h"
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#include "libavutil/mathematics.h"
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#include "libavcodec/timecode.h"
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#include "avformat.h"
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#include "internal.h"
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#include "gxf.h"
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@ -29,6 +31,19 @@
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#define GXF_AUDIO_PACKET_SIZE 65536
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#define GXF_TIMECODE(c, d, h, m, s, f) \
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((c) << 30 | (d) << 29 | (h) << 24 | (m) << 16 | (s) << 8 | (f))
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typedef struct GXFTimecode{
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int hh;
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int mm;
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int ss;
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int ff;
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int color;
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int drop;
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char *str;
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} GXFTimecode;
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typedef struct GXFStreamContext {
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AudioInterleaveContext aic;
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uint32_t track_type;
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@ -49,6 +64,7 @@ typedef struct GXFStreamContext {
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} GXFStreamContext;
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typedef struct GXFContext {
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AVClass *av_class;
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uint32_t nb_fields;
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uint16_t audio_tracks;
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uint16_t mpeg_tracks;
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@ -67,6 +83,7 @@ typedef struct GXFContext {
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uint64_t *map_offsets; ///< offset of map packets
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unsigned map_offsets_nb;
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unsigned packet_count;
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GXFTimecode tc;
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} GXFContext;
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static const struct {
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@ -200,19 +217,21 @@ static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st)
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return size + 3;
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}
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static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFStreamContext *sc)
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static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFContext *gxf)
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{
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avio_w8(pb, 0); /* fields */
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avio_w8(pb, 0); /* seconds */
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avio_w8(pb, 0); /* minutes */
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avio_w8(pb, 0); /* flags + hours */
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uint32_t timecode = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
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gxf->tc.hh, gxf->tc.mm,
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gxf->tc.ss, gxf->tc.ff);
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avio_wl32(pb, timecode);
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/* reserved */
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avio_wb32(pb, 0);
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avio_wl32(pb, 0);
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return 8;
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}
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static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index)
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{
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GXFContext *gxf = s->priv_data;
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AVIOContext *pb = s->pb;
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int64_t pos;
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int mpeg = sc->track_type == 4 || sc->track_type == 9;
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@ -236,7 +255,7 @@ static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc,
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avio_w8(pb, TRACK_AUX);
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avio_w8(pb, 8);
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if (sc->track_type == 3)
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gxf_write_timecode_auxiliary(pb, sc);
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gxf_write_timecode_auxiliary(pb, gxf);
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else
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avio_wl64(pb, 0);
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}
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@ -398,7 +417,9 @@ static int gxf_write_umf_material_description(AVFormatContext *s)
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int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
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int64_t timestamp = 0;
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AVDictionaryEntry *t;
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uint32_t timecode;
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uint64_t nb_fields;
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uint32_t timecode_in; // timecode at mark in
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uint32_t timecode_out; // timecode at mark out
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#if FF_API_TIMESTAMP
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if (s->timestamp)
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@ -408,20 +429,29 @@ static int gxf_write_umf_material_description(AVFormatContext *s)
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if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
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timestamp = ff_iso8601_to_unix_time(t->value);
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// XXX drop frame
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timecode =
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gxf->nb_fields / (timecode_base * 3600) % 24 << 24 | // hours
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gxf->nb_fields / (timecode_base * 60) % 60 << 16 | // minutes
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gxf->nb_fields / timecode_base % 60 << 8 | // seconds
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gxf->nb_fields % timecode_base; // fields
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timecode_in = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
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gxf->tc.hh, gxf->tc.mm,
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gxf->tc.ss, gxf->tc.ff);
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nb_fields = gxf->nb_fields +
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gxf->tc.hh * (timecode_base * 3600) +
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gxf->tc.mm * (timecode_base * 60) +
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gxf->tc.ss * timecode_base +
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gxf->tc.ff;
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timecode_out = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop,
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nb_fields / (timecode_base * 3600) % 24,
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nb_fields / (timecode_base * 60) % 60,
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nb_fields / timecode_base % 60,
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nb_fields % timecode_base);
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avio_wl32(pb, gxf->flags);
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avio_wl32(pb, gxf->nb_fields); /* length of the longest track */
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avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */
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avio_wl32(pb, 0); /* mark in */
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avio_wl32(pb, gxf->nb_fields); /* mark out */
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avio_wl32(pb, 0); /* timecode mark in */
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avio_wl32(pb, timecode); /* timecode mark out */
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avio_wl32(pb, timecode_in); /* timecode mark in */
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avio_wl32(pb, timecode_out); /* timecode mark out */
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avio_wl64(pb, timestamp); /* modification time */
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avio_wl64(pb, timestamp); /* creation time */
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avio_wl16(pb, 0); /* reserved */
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@ -496,9 +526,9 @@ static int gxf_write_umf_media_mpeg(AVIOContext *pb, AVStream *st)
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return 32;
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}
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static int gxf_write_umf_media_timecode(AVIOContext *pb, GXFStreamContext *sc)
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static int gxf_write_umf_media_timecode(AVIOContext *pb, int drop)
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{
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avio_wl32(pb, 1); /* non drop frame */
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avio_wl32(pb, drop); /* drop frame */
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avio_wl32(pb, 0); /* reserved */
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avio_wl32(pb, 0); /* reserved */
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avio_wl32(pb, 0); /* reserved */
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@ -578,7 +608,7 @@ static int gxf_write_umf_media_description(AVFormatContext *s)
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avio_wl32(pb, 0); /* reserved */
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if (sc == &gxf->timecode_track)
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gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */
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gxf_write_umf_media_timecode(pb, gxf->tc.drop);
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else {
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AVStream *st = s->streams[i];
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switch (st->codec->codec_id) {
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@ -641,6 +671,25 @@ static void gxf_init_timecode_track(GXFStreamContext *sc, GXFStreamContext *vsc)
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sc->fields = vsc->fields;
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}
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static int gxf_init_timecode(AVFormatContext *s, GXFTimecode *tc, int fields)
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{
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char c;
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if (sscanf(tc->str, "%d:%d:%d%c%d", &tc->hh, &tc->mm, &tc->ss, &c, &tc->ff) != 5) {
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av_log(s, AV_LOG_ERROR, "unable to parse timecode, "
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"syntax: hh:mm:ss[:;.]ff\n");
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return -1;
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}
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tc->color = 0;
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tc->drop = c != ':';
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if (fields == 2)
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tc->ff = tc->ff * 2;
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return 0;
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}
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static int gxf_write_header(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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@ -759,6 +808,10 @@ static int gxf_write_header(AVFormatContext *s)
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if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
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return -1;
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if (gxf->tc.str) {
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gxf_init_timecode(s, &gxf->tc, vsc->fields);
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}
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gxf_init_timecode_track(&gxf->timecode_track, vsc);
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gxf->flags |= 0x200000; // time code track is non-drop frame
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@ -946,6 +999,18 @@ static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pk
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av_interleave_packet_per_dts, gxf_compare_field_nb);
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}
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static const AVOption options[] = {
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{ TIMECODE_OPT(GXFContext, AV_OPT_FLAG_ENCODING_PARAM) },
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{ NULL }
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};
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static const AVClass gxf_muxer_class = {
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.class_name = "GXF muxer",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVOutputFormat ff_gxf_muxer = {
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.name = "gxf",
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.long_name = NULL_IF_CONFIG_SMALL("GXF format"),
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@ -957,4 +1022,5 @@ AVOutputFormat ff_gxf_muxer = {
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.write_packet = gxf_write_packet,
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.write_trailer = gxf_write_trailer,
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.interleave_packet = gxf_interleave_packet,
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.priv_class = &gxf_muxer_class,
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};
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@ -1,3 +1,3 @@
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346d38d330ab5cb0caa6b5537167bc0d *./tests/data/lavf/lavf.gxf
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1c1693cf2358025f1e37ac76e1da925a *./tests/data/lavf/lavf.gxf
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796392 ./tests/data/lavf/lavf.gxf
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./tests/data/lavf/lavf.gxf CRC=0x102918fd
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