* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavutil/fifo.h"
#include "avformat.h"
#include "gxf.h"
#include "riff.h"
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 {
uint32_t umf_length;
uint16_t umf_track_size;
uint16_t umf_media_size;
- int sample_rate;
+ 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;
} GXFContext;
-typedef struct GXF_Lines {
- int height;
- int index;
-} GXF_Lines;
-
-
-/* FIXME check if it is relevant */
-static const GXF_Lines gxf_lines_tab[] = {
+static const struct {
+ int height, index;
+} gxf_lines_tab[] = {
{ 480, 1 }, /* NTSC */
{ 512, 1 }, /* NTSC + VBI */
{ 576, 2 }, /* PAL */
{ CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */
{ CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */
{ CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */
- { 0, 0 },
+ { CODEC_ID_NONE, 0 },
};
-#define SERVER_PATH "/space/"
-#define ES_NAME_PATTERN "ES."
+#define SERVER_PATH "EXT:/PDR/default/"
+#define ES_NAME_PATTERN "EXT:/PDR/default/ES."
static int gxf_find_lines_index(AVStream *st)
{
return updateSize(pb, pos);
}
-static int gxf_write_map_packet(AVFormatContext *s)
+static int gxf_write_map_packet(AVFormatContext *s, int rewrite)
{
+ GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t pos = url_ftell(pb);
+ 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));
+ 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
+ }
+
gxf_write_packet_header(pb, PKT_MAP);
/* preamble */
return updatePacketSize(pb, pos);
}
-#if 0
static int gxf_write_flt_packet(AVFormatContext *s)
{
GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t pos = url_ftell(pb);
- int i;
+ int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1;
+ int flt_entries = gxf->nb_fields / fields_per_flt - 1;
+ int i = 0;
gxf_write_packet_header(pb, PKT_FLT);
- put_le32(pb, 1000); /* number of fields */
- put_le32(pb, 0); /* number of active flt entries */
+ put_le32(pb, fields_per_flt); /* number of fields */
+ put_le32(pb, flt_entries); /* number of active flt entries */
- for (i = 0; i < 1000; ++i) {
- put_le32(pb, 0);
+ if (gxf->flt_entries) {
+ for (i = 0; i < flt_entries; i++)
+ put_le32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]);
}
+
+ for (; i < 1000; i++)
+ put_le32(pb, 0);
+
return updatePacketSize(pb, pos);
}
-#endif
static int gxf_write_umf_material_description(AVFormatContext *s)
{
GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
+ int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
// XXX drop frame
uint32_t timecode =
- gxf->nb_fields / (gxf->sample_rate * 3600) % 24 << 24 | // hours
- gxf->nb_fields / (gxf->sample_rate * 60) % 60 << 16 | // minutes
- gxf->nb_fields / gxf->sample_rate % 60 << 8 | // seconds
- gxf->nb_fields % gxf->sample_rate; // fields
+ 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
put_le32(pb, gxf->flags);
put_le32(pb, gxf->nb_fields); /* length of the longest track */
GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t pos;
- int i;
+ int i, j;
pos = url_ftell(pb);
gxf->umf_media_offset = pos - gxf->umf_start_offset;
for (i = 0; i <= s->nb_streams; ++i) {
GXFStreamContext *sc;
- char buffer[88];
int64_t startpos, curpos;
- int path_size = strlen(ES_NAME_PATTERN);
if (i == s->nb_streams)
sc = &gxf->timecode_track;
else
sc = s->streams[i]->priv_data;
- memset(buffer, 0, 88);
startpos = url_ftell(pb);
put_le16(pb, 0); /* length */
put_le16(pb, sc->media_info);
put_le32(pb, 0); /* attributes rw, ro */
put_le32(pb, 0); /* mark in */
put_le32(pb, gxf->nb_fields); /* mark out */
- strncpy(buffer, ES_NAME_PATTERN, path_size);
- put_buffer(pb, (uint8_t *)buffer, path_size);
+ put_buffer(pb, ES_NAME_PATTERN, sizeof(ES_NAME_PATTERN));
put_be16(pb, sc->media_info);
- put_buffer(pb, (uint8_t *)buffer + path_size + 2, 88 - path_size - 2);
+ for (j = sizeof(ES_NAME_PATTERN)+2; j < 88; j++)
+ put_byte(pb, 0);
put_le32(pb, sc->track_type);
put_le32(pb, sc->sample_rate);
put_le32(pb, sc->sample_size);
gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */
else {
AVStream *st = s->streams[i];
- switch (st->codec->codec_id) {
- case CODEC_ID_MPEG2VIDEO:
- gxf_write_umf_media_mpeg(pb, st);
- break;
- case CODEC_ID_PCM_S16LE:
- gxf_write_umf_media_audio(pb, sc);
- break;
- case CODEC_ID_DVVIDEO:
- gxf_write_umf_media_dv(pb, sc);
- break;
- }
+ switch (st->codec->codec_id) {
+ case CODEC_ID_MPEG2VIDEO:
+ gxf_write_umf_media_mpeg(pb, st);
+ break;
+ case CODEC_ID_PCM_S16LE:
+ gxf_write_umf_media_audio(pb, sc);
+ break;
+ case CODEC_ID_DVVIDEO:
+ gxf_write_umf_media_dv(pb, sc);
+ break;
+ }
}
curpos = url_ftell(pb);
uint8_t tracks[255] = {0};
int i, media_info = 0;
+ if (url_is_streamed(pb)) {
+ av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome");
+ return -1;
+ }
+
gxf->flags |= 0x00080000; /* material is simple clip */
for (i = 0; i < s->nb_streams; ++i) {
AVStream *st = s->streams[i];
return AVERROR(ENOMEM);
st->priv_data = sc;
- sc->media_type = codec_get_tag(gxf_media_types, st->codec->codec_id);
+ sc->media_type = ff_codec_get_tag(gxf_media_types, st->codec->codec_id);
if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if (st->codec->codec_id != CODEC_ID_PCM_S16LE) {
av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n");
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
media_info = 'A';
} else if (st->codec->codec_type == CODEC_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 { /* assume PAL */
sc->frame_rate_index = 6;
sc->media_type++;
sc->sample_rate = 50;
gxf->flags |= 0x00000040;
+ gxf->time_base = (AVRational){ 1, 50 };
}
- gxf->sample_rate = sc->sample_rate;
- av_set_pts_info(st, 64, 1, st->codec->time_base.den);
+ av_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;
}
/* 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)
gxf_init_timecode_track(&gxf->timecode_track, vsc);
gxf->flags |= 0x200000; // time code track is non-drop frame
- gxf_write_map_packet(s);
- //gxf_write_flt_packet(s);
+ gxf_write_map_packet(s, 0);
+ gxf_write_flt_packet(s);
gxf_write_umf_packet(s);
+
+ gxf->packet_count = 3;
+
put_flush_packet(pb);
return 0;
}
static int gxf_write_trailer(AVFormatContext *s)
{
+ GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t end;
+ int i;
ff_audio_interleave_close(s);
gxf_write_eos_packet(pb);
end = url_ftell(pb);
url_fseek(pb, 0, SEEK_SET);
- /* overwrite map and umf packets with new values */
- gxf_write_map_packet(s);
- //gxf_write_flt_packet(s);
+ /* overwrite map, flt and umf packets with new values */
+ gxf_write_map_packet(s, 1);
+ gxf_write_flt_packet(s);
gxf_write_umf_packet(s);
+ put_flush_packet(pb);
+ /* update duration in all map packets */
+ for (i = 1; i < gxf->map_offsets_nb; i++) {
+ url_fseek(pb, gxf->map_offsets[i], SEEK_SET);
+ gxf_write_map_packet(s, 1);
+ put_flush_packet(pb);
+ }
+
url_fseek(pb, end, SEEK_SET);
+
+ av_freep(&gxf->flt_entries);
+ av_freep(&gxf->map_offsets);
+
return 0;
}
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
field_nb = gxf->nb_fields;
} else {
- field_nb = av_rescale_rnd(pkt->dts, gxf->sample_rate, st->codec->time_base.den, AV_ROUND_UP);
+ field_nb = av_rescale_rnd(pkt->dts, gxf->time_base.den,
+ (int64_t)48000*gxf->time_base.num, AV_ROUND_UP);
}
put_byte(pb, sc->media_type);
put_buffer(pb, pkt->data, pkt->size);
gxf_write_padding(pb, padding);
- if (st->codec->codec_type == CODEC_TYPE_VIDEO)
+ if (st->codec->codec_type == CODEC_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));
+ if (!gxf->flt_entries) {
+ av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
+ return -1;
+ }
+ }
+ gxf->flt_entries[gxf->flt_entries_nb++] = url_ftell(pb) / 1024;
gxf->nb_fields += 2; // count fields
+ }
+
+ updatePacketSize(pb, pos);
+
+ gxf->packet_count++;
+ if (gxf->packet_count == 100) {
+ gxf_write_map_packet(s, 0);
+ gxf->packet_count = 0;
+ }
put_flush_packet(pb);
- return updatePacketSize(pb, pos);
+ 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 == CODEC_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 == CODEC_TYPE_VIDEO)
+ pkt->duration = 2; // enforce 2 fields
return ff_audio_rechunk_interleave(s, out, pkt, flush,
- av_interleave_packet_per_dts, ff_interleave_compare_dts);
+ av_interleave_packet_per_dts, gxf_compare_field_nb);
}
AVOutputFormat gxf_muxer = {
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