static int aiff_write_trailer(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
AIFFOutputContext *aiff = s->priv_data;
AVCodecContext *enc = s->streams[0]->codec;
/* Chunks sizes must be even */
int64_t file_size, end_size;
end_size = file_size = url_ftell(pb);
if (file_size & 1) {
put_byte(pb, 0);
end_size++;
}
if (!url_is_streamed(s->pb)) {
/* File length */
url_fseek(pb, aiff->form, SEEK_SET);
put_be32(pb, file_size - aiff->form - 4);
/* Number of sample frames */
url_fseek(pb, aiff->frames, SEEK_SET);
put_be32(pb, (file_size-aiff->ssnd-12)/enc->block_align);
/* Sound Data chunk size */
url_fseek(pb, aiff->ssnd, SEEK_SET);
put_be32(pb, file_size - aiff->ssnd - 4);
/* return to the end */
url_fseek(pb, end_size, SEEK_SET);
put_flush_packet(pb);
}
return 0;
}
static int rm_write_trailer(AVFormatContext *s)
{
RMMuxContext *rm = s->priv_data;
int data_size, index_pos, i;
ByteIOContext *pb = s->pb;
if (!url_is_streamed(s->pb)) {
/* end of file: finish to write header */
index_pos = url_fseek(pb, 0, SEEK_CUR);
data_size = index_pos - rm->data_pos;
/* FIXME: write index */
/* undocumented end header */
put_be32(pb, 0);
put_be32(pb, 0);
url_fseek(pb, 0, SEEK_SET);
for(i=0;i<s->nb_streams;i++)
rm->streams[i].total_frames = rm->streams[i].nb_frames;
rv10_write_header(s, data_size, 0);
} else {
/* undocumented end header */
put_be32(pb, 0);
put_be32(pb, 0);
}
put_flush_packet(pb);
return 0;
}
static void write_sgi_header(ByteIOContext *f, const SGIInfo *info)
{
int i;
put_be16(f, SGI_MAGIC);
put_byte(f, info->rle);
put_byte(f, info->bytes_per_channel);
put_be16(f, info->dimension);
put_be16(f, info->xsize);
put_be16(f, info->ysize);
put_be16(f, info->zsize);
/* The rest are constant in this implementation */
put_be32(f, 0L); /* pixmin */
put_be32(f, 255L); /* pixmax */
put_be32(f, 0L); /* dummy */
/* name */
for (i = 0; i < 80; i++) {
put_byte(f, 0);
}
put_be32(f, 0L); /* colormap */
/* The rest of the 512 byte header is unused. */
for (i = 0; i < 404; i++) {
put_byte(f, 0);
}
}
void write_fsmonitor_extension(struct strbuf *sb, struct index_state *istate)
{
uint32_t hdr_version;
uint64_t tm;
uint32_t ewah_start;
uint32_t ewah_size = 0;
int fixup = 0;
put_be32(&hdr_version, INDEX_EXTENSION_VERSION);
strbuf_add(sb, &hdr_version, sizeof(uint32_t));
put_be64(&tm, istate->fsmonitor_last_update);
strbuf_add(sb, &tm, sizeof(uint64_t));
fixup = sb->len;
strbuf_add(sb, &ewah_size, sizeof(uint32_t)); /* we'll fix this up later */
ewah_start = sb->len;
ewah_serialize_strbuf(istate->fsmonitor_dirty, sb);
ewah_free(istate->fsmonitor_dirty);
istate->fsmonitor_dirty = NULL;
/* fix up size field */
put_be32(&ewah_size, sb->len - ewah_start);
memcpy(sb->buf + fixup, &ewah_size, sizeof(uint32_t));
trace_printf_key(&trace_fsmonitor, "write fsmonitor extension successful");
}
static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
{
ByteIOContext *pb = &s->pb;
AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
FLVContext *flv = s->priv_data;
int size= pkt->size;
int flags;
// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
if (enc->codec_type == CODEC_TYPE_VIDEO) {
put_byte(pb, 9);
flags = 2; // choose h263
flags |= pkt->flags & PKT_FLAG_KEY ? 0x10 : 0x20; // add keyframe indicator
} else {
assert(enc->codec_type == CODEC_TYPE_AUDIO);
flags = get_audio_flags(enc);
assert(size);
put_byte(pb, 8);
}
put_be24(pb,size+1); // include flags
put_be24(pb,pkt->pts);
put_be32(pb,flv->reserved);
put_byte(pb,flags);
put_buffer(pb, pkt->data, size);
put_be32(pb,size+1+11); // previous tag size
flv->duration = pkt->pts + pkt->duration;
put_flush_packet(pb);
return 0;
}
static int gxf_write_media_preamble(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt, int size)
{
GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
int64_t dts = av_rescale_rnd(pkt->dts, ctx->sample_rate, sc->codec->time_base.den, AV_ROUND_UP);
put_byte(pb, sc->media_type);
put_byte(pb, sc->index);
put_be32(pb, dts);
if (sc->codec->codec_type == CODEC_TYPE_AUDIO) {
put_be16(pb, 0);
put_be16(pb, size / 2);
} else if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size);
if (frame_type == FF_I_TYPE) {
put_byte(pb, 0x0d);
sc->iframes++;
} else if (frame_type == FF_B_TYPE) {
put_byte(pb, 0x0f);
sc->bframes++;
} else {
put_byte(pb, 0x0e);
sc->pframes++;
}
put_be24(pb, size);
} else if (sc->codec->codec_id == CODEC_ID_DVVIDEO) {
put_byte(pb, size / 4096);
put_be24(pb, 0);
} else
put_be32(pb, size);
put_be32(pb, dts);
put_byte(pb, 1); /* flags */
put_byte(pb, 0); /* reserved */
return 16;
}
static void gxf_write_packet_header(ByteIOContext *pb, GXFPktType type)
{
put_be32(pb, 0); /* packet leader for synchro */
put_byte(pb, 1);
put_byte(pb, type); /* map packet */
put_be32(pb, 0); /* size */
put_be32(pb, 0); /* reserved */
put_byte(pb, 0xE1); /* trailer 1 */
put_byte(pb, 0xE2); /* trailer 2 */
}
static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index)
{
ByteIOContext *pb = s->pb;
int64_t pos;
int mpeg = sc->track_type == 4 || sc->track_type == 9;
/* track description section */
put_byte(pb, sc->media_type + 0x80);
put_byte(pb, index + 0xC0);
pos = url_ftell(pb);
put_be16(pb, 0); /* size */
/* media file name */
put_byte(pb, TRACK_NAME);
put_byte(pb, strlen(ES_NAME_PATTERN) + 3);
put_tag(pb, ES_NAME_PATTERN);
put_be16(pb, sc->media_info);
put_byte(pb, 0);
if (!mpeg) {
/* auxiliary information */
put_byte(pb, TRACK_AUX);
put_byte(pb, 8);
if (sc->track_type == 3)
gxf_write_timecode_auxiliary(pb, sc);
else
put_le64(pb, 0);
}
/* file system version */
put_byte(pb, TRACK_VER);
put_byte(pb, 4);
put_be32(pb, 0);
if (mpeg)
gxf_write_mpeg_auxiliary(pb, s->streams[index]);
/* frame rate */
put_byte(pb, TRACK_FPS);
put_byte(pb, 4);
put_be32(pb, sc->frame_rate_index);
/* lines per frame */
put_byte(pb, TRACK_LINES);
put_byte(pb, 4);
put_be32(pb, sc->lines_index);
/* fields per frame */
put_byte(pb, TRACK_FPF);
put_byte(pb, 4);
put_be32(pb, sc->fields);
return updateSize(pb, pos);
}
static void output_match(ByteIOContext *out, int match_sample,
int match_offset, int match_len, int *entries)
{
put_byte(out, 2); /* sample constructor */
put_byte(out, 0); /* track reference */
put_be16(out, match_len);
put_be32(out, match_sample);
put_be32(out, match_offset);
put_be16(out, 1); /* bytes per block */
put_be16(out, 1); /* samples per block */
(*entries)++;
}
static int gxf_write_track_description(ByteIOContext *pb, GXFStreamContext *stream)
{
int64_t pos;
/* track description section */
put_byte(pb, stream->media_type + 0x80);
put_byte(pb, stream->index + 0xC0);
pos = url_ftell(pb);
put_be16(pb, 0); /* size */
/* media file name */
put_byte(pb, TRACK_NAME);
put_byte(pb, strlen(ES_NAME_PATTERN) + 3);
put_tag(pb, ES_NAME_PATTERN);
put_be16(pb, stream->media_info);
put_byte(pb, 0);
if (stream->codec->codec_id != CODEC_ID_MPEG2VIDEO) {
/* auxiliary information */
put_byte(pb, TRACK_AUX);
put_byte(pb, 8);
if (stream->codec->codec_id == CODEC_ID_NONE)
gxf_write_timecode_auxiliary(pb, stream);
else
put_le64(pb, 0);
}
/* file system version */
put_byte(pb, TRACK_VER);
put_byte(pb, 4);
put_be32(pb, 0);
if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO)
gxf_write_mpeg_auxiliary(pb, stream);
/* frame rate */
put_byte(pb, TRACK_FPS);
put_byte(pb, 4);
put_be32(pb, stream->frame_rate_index);
/* lines per frame */
put_byte(pb, TRACK_LINES);
put_byte(pb, 4);
put_be32(pb, stream->lines_index);
/* fields per frame */
put_byte(pb, TRACK_FPF);
put_byte(pb, 4);
put_be32(pb, stream->fields);
return updateSize(pb, pos);
}
/* AUDIO_FILE header */
static int put_au_header(ByteIOContext *pb, AVCodecContext *enc)
{
if(!enc->codec_tag)
return -1;
put_tag(pb, ".snd"); /* magic number */
put_be32(pb, 24); /* header size */
put_be32(pb, AU_UNKNOWN_SIZE); /* data size */
put_be32(pb, (uint32_t)enc->codec_tag); /* codec ID */
put_be32(pb, enc->sample_rate);
put_be32(pb, (uint32_t)enc->channels);
return 0;
}
AM_ERR CMp4Builder::put_FileTypeBox()
{
PRINT_FUNCTION_NAME;
AM_ENSURE_OK_(put_be32(FileTypeBox_SIZE)); //uint32 size
AM_ENSURE_OK_(put_boxtype("ftyp"));
AM_ENSURE_OK_(put_boxtype("mp42")); //uint32 major_brand
AM_ENSURE_OK_(put_be32(0)); //uint32 minor_version
AM_ENSURE_OK_(put_boxtype("mp42")); //uint32 compatible_brands[]
AM_ENSURE_OK_(put_boxtype("isom"));
return ME_OK;
}
static int mmf_write_header(AVFormatContext *s)
{
MMFContext *mmf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t pos;
int rate;
rate = mmf_rate_code(s->streams[0]->codec->sample_rate);
if(rate < 0) {
av_log(s, AV_LOG_ERROR, "Unsupported sample rate %d\n", s->streams[0]->codec->sample_rate);
return -1;
}
put_tag(pb, "MMMD");
put_be32(pb, 0);
pos = ff_start_tag(pb, "CNTI");
put_byte(pb, 0); /* class */
put_byte(pb, 0); /* type */
put_byte(pb, 0); /* code type */
put_byte(pb, 0); /* status */
put_byte(pb, 0); /* counts */
put_tag(pb, "VN:libavcodec,"); /* metadata ("ST:songtitle,VN:version,...") */
end_tag_be(pb, pos);
put_buffer(pb, "ATR\x00", 4);
put_be32(pb, 0);
mmf->atrpos = url_ftell(pb);
put_byte(pb, 0); /* format type */
put_byte(pb, 0); /* sequence type */
put_byte(pb, (0 << 7) | (1 << 4) | rate); /* (channel << 7) | (format << 4) | rate */
put_byte(pb, 0); /* wave base bit */
put_byte(pb, 2); /* time base d */
put_byte(pb, 2); /* time base g */
put_tag(pb, "Atsq");
put_be32(pb, 16);
mmf->atsqpos = url_ftell(pb);
/* Will be filled on close */
put_buffer(pb, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16);
mmf->awapos = ff_start_tag(pb, "Awa\x01");
av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
put_flush_packet(pb);
return 0;
}
void
RTMPSession::sendSetChunkSize(int32_t chunkSize)
{
m_jobQueue.enqueue([&, chunkSize] {
int streamId = 0;
std::vector<uint8_t> buff;
put_byte(buff, 2); // chunk stream ID 2
put_be24(buff, 0); // ts
put_be24(buff, 4); // size (4 bytes)
put_byte(buff, RTMP_PT_CHUNK_SIZE); // chunk type
put_buff(buff, (uint8_t*)&streamId, sizeof(int32_t)); // msg stream id is little-endian
put_be32(buff, chunkSize);
write(&buff[0], buff.size());
m_outChunkSize = chunkSize;
});
}
static void *generate_fake_oid(const void *old, size_t *len)
{
static uint32_t counter = 1; /* avoid null sha1 */
unsigned char *out = xcalloc(GIT_SHA1_RAWSZ, 1);
put_be32(out + GIT_SHA1_RAWSZ - 4, counter++);
return out;
}
int chown(fs_context& fs, const char* path, uid_t uid, gid_t gid)
{
if (ffsp::is_debug_path(fs, path))
return -EPERM;
inode* ino;
int rc = ffsp::lookup(fs, &ino, path);
if (rc < 0)
return rc;
ino->i_uid = put_be32(uid);
ino->i_gid = put_be32(gid);
mark_dirty(fs, *ino);
flush_inodes(fs, false);
return 0;
}
static void *generate_fake_sha1(const void *old, size_t *len)
{
static uint32_t counter = 1; /* avoid null sha1 */
unsigned char *out = xcalloc(20, 1);
put_be32(out + 16, counter++);
return out;
}
static int gxf_write_material_data_section(AVFormatContext *s)
{
GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
int64_t pos;
const char *filename = strrchr(s->filename, '/');
pos = url_ftell(pb);
put_be16(pb, 0); /* size */
/* name */
if (filename)
filename++;
else
filename = s->filename;
put_byte(pb, MAT_NAME);
put_byte(pb, strlen(SERVER_PATH) + strlen(filename) + 1);
put_tag(pb, SERVER_PATH);
put_tag(pb, filename);
put_byte(pb, 0);
/* first field */
put_byte(pb, MAT_FIRST_FIELD);
put_byte(pb, 4);
put_be32(pb, 0);
/* last field */
put_byte(pb, MAT_LAST_FIELD);
put_byte(pb, 4);
put_be32(pb, gxf->nb_fields);
/* reserved */
put_byte(pb, MAT_MARK_IN);
put_byte(pb, 4);
put_be32(pb, 0);
put_byte(pb, MAT_MARK_OUT);
put_byte(pb, 4);
put_be32(pb, gxf->nb_fields);
/* estimated size */
put_byte(pb, MAT_SIZE);
put_byte(pb, 4);
put_be32(pb, url_fsize(pb) / 1024);
return updateSize(pb, pos);
}
static void ogg_update_checksum(AVFormatContext *s, int64_t crc_offset)
{
int64_t pos = url_ftell(s->pb);
uint32_t checksum = get_checksum(s->pb);
url_fseek(s->pb, crc_offset, SEEK_SET);
put_be32(s->pb, checksum);
url_fseek(s->pb, pos, SEEK_SET);
}
AM_ERR CMp4Builder::UpdateIdxBox()
{
PRINT_FUNCTION_NAME;
mpMuxedFile->SeekData(_mdat_begin_pos, SEEK_SET);
mCurPos = _mdat_begin_pos;
put_be32(_mdat_end_pos - _mdat_begin_pos);
return ME_OK;
}
static int gxf_write_media_preamble(AVFormatContext *s, AVPacket *pkt, int size)
{
GXFContext *gxf = s->priv_data;
ByteIOContext *pb = s->pb;
AVStream *st = s->streams[pkt->stream_index];
GXFStreamContext *sc = st->priv_data;
unsigned field_nb;
/* If the video is frame-encoded, the frame numbers shall be represented by
* even field numbers.
* see SMPTE360M-2004 6.4.2.1.3 Media field number */
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
field_nb = gxf->nb_fields;
} else {
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_byte(pb, st->index);
put_be32(pb, field_nb);
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
put_be16(pb, 0);
put_be16(pb, size / 2);
} else if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size);
if (frame_type == FF_I_TYPE) {
put_byte(pb, 0x0d);
sc->iframes++;
} else if (frame_type == FF_B_TYPE) {
put_byte(pb, 0x0f);
sc->bframes++;
} else {
put_byte(pb, 0x0e);
sc->pframes++;
}
put_be24(pb, size);
} else if (st->codec->codec_id == CODEC_ID_DVVIDEO) {
put_byte(pb, size / 4096);
put_be24(pb, 0);
} else
put_be32(pb, size);
put_be32(pb, field_nb);
put_byte(pb, 1); /* flags */
put_byte(pb, 0); /* reserved */
return 16;
}
static int gxf_write_material_data_section(ByteIOContext *pb, GXFContext *ctx)
{
offset_t pos;
const char *filename = strrchr(ctx->fc->filename, '/');
pos = url_ftell(pb);
put_be16(pb, 0); /* size */
/* name */
if (filename)
filename++;
else
filename = ctx->fc->filename;
put_byte(pb, MAT_NAME);
put_byte(pb, strlen(SERVER_PATH) + strlen(filename) + 1);
put_tag(pb, SERVER_PATH);
put_tag(pb, filename);
put_byte(pb, 0);
/* first field */
put_byte(pb, MAT_FIRST_FIELD);
put_byte(pb, 4);
put_be32(pb, 0);
/* last field */
put_byte(pb, MAT_LAST_FIELD);
put_byte(pb, 4);
put_be32(pb, ctx->nb_frames);
/* reserved */
put_byte(pb, MAT_MARK_IN);
put_byte(pb, 4);
put_be32(pb, 0);
put_byte(pb, MAT_MARK_OUT);
put_byte(pb, 4);
put_be32(pb, ctx->nb_frames);
/* estimated size */
put_byte(pb, MAT_SIZE);
put_byte(pb, 4);
put_be32(pb, url_fsize(pb) / 1024);
return updateSize(pb, pos);
}
static int gxf_write_umf_media_dv(ByteIOContext *pb, GXFStreamContext *sc)
{
int i;
for (i = 0; i < 8; i++) {
put_be32(pb, 0);
}
return 32;
}
/* Copy of end_tag() from avienc.c, but for big-endian chunk size */
static void end_tag_be(ByteIOContext *pb, int64_t start)
{
int64_t pos;
pos = url_ftell(pb);
url_fseek(pb, start - 4, SEEK_SET);
put_be32(pb, (uint32_t)(pos - start));
url_fseek(pb, pos, SEEK_SET);
}
static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int flags)
{
RMMuxContext *rm = s->priv_data;
ByteIOContext *pb = s->pb;
StreamInfo *stream = rm->video_stream;
int key_frame = !!(flags & AV_PKT_FLAG_KEY);
/* XXX: this is incorrect: should be a parameter */
/* Well, I spent some time finding the meaning of these bits. I am
not sure I understood everything, but it works !! */
#if 1
write_packet_header(s, stream, size + 7 + (size >= 0x4000)*4, key_frame);
/* bit 7: '1' if final packet of a frame converted in several packets */
put_byte(pb, 0x81);
/* bit 7: '1' if I frame. bits 6..0 : sequence number in current
frame starting from 1 */
if (key_frame) {
put_byte(pb, 0x81);
} else {
put_byte(pb, 0x01);
}
if(size >= 0x4000){
put_be32(pb, size); /* total frame size */
put_be32(pb, size); /* offset from the start or the end */
}else{
put_be16(pb, 0x4000 | size); /* total frame size */
put_be16(pb, 0x4000 | size); /* offset from the start or the end */
}
#else
/* full frame */
write_packet_header(s, size + 6);
put_byte(pb, 0xc0);
put_be16(pb, 0x4000 + size); /* total frame size */
put_be16(pb, 0x4000 + packet_number * 126); /* position in stream */
#endif
put_byte(pb, stream->nb_frames & 0xff);
put_buffer(pb, buf, size);
put_flush_packet(pb);
stream->nb_frames++;
return 0;
}
static int sox_write_header(AVFormatContext *s)
{
SoXContext *sox = s->priv_data;
ByteIOContext *pb = s->pb;
AVCodecContext *enc = s->streams[0]->codec;
AVMetadataTag *comment;
size_t comment_len = 0, comment_size;
comment = av_metadata_get(s->metadata, "comment", NULL, 0);
if (comment)
comment_len = strlen(comment->value);
comment_size = (comment_len + 7) & ~7;
sox->header_size = SOX_FIXED_HDR + comment_size;
if (enc->codec_id == CODEC_ID_PCM_S32LE) {
put_tag(pb, ".SoX");
put_le32(pb, sox->header_size);
put_le64(pb, 0); /* number of samples */
put_le64(pb, av_dbl2int(enc->sample_rate));
put_le32(pb, enc->channels);
put_le32(pb, comment_size);
} else if (enc->codec_id == CODEC_ID_PCM_S32BE) {
put_tag(pb, "XoS.");
put_be32(pb, sox->header_size);
put_be64(pb, 0); /* number of samples */
put_be64(pb, av_dbl2int(enc->sample_rate));
put_be32(pb, enc->channels);
put_be32(pb, comment_size);
} else {
av_log(s, AV_LOG_ERROR, "invalid codec; use pcm_s32le or pcm_s32be\n");
return -1;
}
if (comment_len)
put_buffer(pb, comment->value, comment_len);
for ( ; comment_size > comment_len; comment_len++)
put_byte(pb, 0);
put_flush_packet(pb);
return 0;
}
//mp4 file size < 2G, no B frames, 1 chunk has only one sample
AM_ERR CMp4Builder::put_MediaDataBox()
{
PRINT_FUNCTION_NAME;
int ret = 0;
_mdat_begin_pos = mCurPos;
ret += put_be32(0); //uint32 size, will be revised in the end
ret += put_boxtype("mdat");
return ((ret == 0) ? ME_OK : ME_ERROR);
}
static int gxf_write_timecode_auxiliary(ByteIOContext *pb, GXFStreamContext *sc)
{
put_byte(pb, 0); /* fields */
put_byte(pb, 0); /* seconds */
put_byte(pb, 0); /* minutes */
put_byte(pb, 0); /* flags + hours */
/* reserved */
put_be32(pb, 0);
return 8;
}
bool update_time(timespec& dest)
{
const auto now = std::chrono::system_clock::now().time_since_epoch();
const auto sec = std::chrono::duration_cast<std::chrono::seconds>(now);
const auto nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(now-sec);
dest.sec = put_be64(sec.count());
dest.nsec = put_be32(nsec.count());
return true;
}
/* send an rtp packet. sequence number is incremented, but the caller
must update the timestamp itself */
void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m)
{
RTPMuxContext *s = s1->priv_data;
dprintf(s1, "rtp_send_data size=%d\n", len);
/* build the RTP header */
put_byte(s1->pb, (RTP_VERSION << 6));
put_byte(s1->pb, (s->payload_type & 0x7f) | ((m & 0x01) << 7));
put_be16(s1->pb, s->seq);
put_be32(s1->pb, s->timestamp);
put_be32(s1->pb, s->ssrc);
put_buffer(s1->pb, buf1, len);
put_flush_packet(s1->pb);
s->seq++;
s->octet_count += len;
s->packet_count++;
}