static int mmf_write_trailer(AVFormatContext *s) { ByteIOContext *pb = s->pb; MMFContext *mmf = s->priv_data; offset_t pos, size; int gatetime; if (!url_is_streamed(s->pb)) { /* Fill in length fields */ end_tag_be(pb, mmf->awapos); end_tag_be(pb, mmf->atrpos); end_tag_be(pb, 8); pos = url_ftell(pb); size = pos - mmf->awapos; /* Fill Atsq chunk */ url_fseek(pb, mmf->atsqpos, SEEK_SET); /* "play wav" */ put_byte(pb, 0); /* start time */ put_byte(pb, 1); /* (channel << 6) | wavenum */ gatetime = size * 500 / s->streams[0]->codec->sample_rate; put_varlength(pb, gatetime); /* duration */ /* "nop" */ put_varlength(pb, gatetime); /* start time */ put_buffer(pb, "\xff\x00", 2); /* nop */ /* "end of sequence" */ put_buffer(pb, "\x00\x00\x00\x00", 4); url_fseek(pb, pos, SEEK_SET); put_flush_packet(pb); } return 0; }
static int mmf_write_trailer(AVFormatContext *s) { AVIOContext *pb = s->pb; MMFContext *mmf = s->priv_data; int64_t pos, size; int gatetime; if (s->pb->seekable) { /* Fill in length fields */ end_tag_be(pb, mmf->awapos); end_tag_be(pb, mmf->atrpos); end_tag_be(pb, 8); pos = avio_tell(pb); size = pos - mmf->awapos; /* Fill Atsq chunk */ avio_seek(pb, mmf->atsqpos, SEEK_SET); /* "play wav" */ avio_w8(pb, 0); /* start time */ avio_w8(pb, 1); /* (channel << 6) | wavenum */ gatetime = size * 500 / s->streams[0]->codec->sample_rate; put_varlength(pb, gatetime); /* duration */ /* "nop" */ put_varlength(pb, gatetime); /* start time */ avio_write(pb, "\xff\x00", 2); /* nop */ /* "end of sequence" */ avio_write(pb, "\x00\x00\x00\x00", 4); avio_seek(pb, pos, SEEK_SET); avio_flush(pb); } return 0; }