static int gxf_write_media_packet(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt)
{
GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
int64_t pos = url_ftell(pb);
int padding = 0;
gxf_write_packet_header(pb, PKT_MEDIA);
if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */
padding = 4 - pkt->size % 4;
else if (sc->codec->codec_type == CODEC_TYPE_AUDIO)
padding = GXF_AUDIO_PACKET_SIZE - pkt->size;
gxf_write_media_preamble(pb, ctx, pkt, pkt->size + padding);
put_buffer(pb, pkt->data, pkt->size);
gxf_write_padding(pb, padding);
return updatePacketSize(pb, pos);
}
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;
int packet_start_offset = avio_tell(pb) / 1024;
gxf_write_packet_header(pb, PKT_MEDIA);
if (st->codec->codec_id == 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))
{
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++] = packet_start_offset;
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;
}
avio_flush(pb);
return 0;
}
