When given a stream starting at dts=0, it would previously consider
s->offset as uninitialized and set an offset when the second packet
was written, ending up writing two packets with dts=0. By initializing
this field to AV_NOPTS_VALUE, we make sure that we only initialize it
once, on the first packet.
Signed-off-by: Martin Storsjö <martin@martin.st>

This tool can write an MPD file for fragmented MP4 files with
a sidx index at the start of the file.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is mapped to the faststart flag (which in this case
perhaps should be called "shift and write index at the
start of the file"), which for fragmented files will
write a sidx index at the start.

When segmenting DASH into files, there's usually one sidx
at the start of each segment (although it's not clear to me
whether that actually is necessary). When storing all of it
in one file, the MPD doesn't necessarily need to describe
the individual segments, but the offsets of the fragments can be
fetched from one large sidx atom at the start of the file. This
allows creating files for the DASH ISO BMFF on-demand profile.
Signed-off-by: Martin Storsjö <martin@martin.st>

Previously only tfra entries were added for the first track in each moof.

The frag_info array used for tfra can also be used for writing
other kinds of fragment indexes, where it's more important to
include all tracks.

When the separate_moof option is enabled (as in ismv), we write
a separate moof for each track, so this doesn't make any difference
in that case.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is mostly to serve as a reference example on how to segment
the output from the mp4 muxer, capable of writing the segment
list in four different ways:
- SegmentTemplate with SegmentTimeline
- SegmentTemplate with implicit segments
- SegmentList with individual files
- SegmentList with one single file per track, and byte ranges

The muxer is able to serve live content (with optional windowing)
or create a static segmented MPD.

In advanced cases, users will probably want to do the segmenting
in their own application code.
Signed-off-by: Martin Storsjö <martin@martin.st>

A flag "dash" is added, which enables the necessary flags for
creating DASH compatible fragments.

When this is enabled, one sidx atom is written for each track
before every moof atom.
Signed-off-by: Martin Storsjö <martin@martin.st>

By calling this after writing the moof the first time (for
calculating the moof size), we can avoid intermediate storage
of tfrf_offset in MOVTrack.
Signed-off-by: Martin Storsjö <martin@martin.st>

When writing fragmented streams with an empty initial moov,
we won't have any samples in any tracks when writing the
moov atom, thus trust that any tracks that are added actually
will be present.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Also, collapse the array into a scalar, since only one value is needed
at a time.

pred_mode is overwritten a few lines immediately below.

It does not need to be accessed outside of hls_coding_unit().

It does not need to be accessed outside of hls_coding_unit().

This allows running the code on android, where 64 bit binaries with
text relocations aren't allowed to be loaded.
Signed-off-by: Martin Storsjö <martin@martin.st>

CC: libav-stable@libav.org
Bug-Id: CID 1206648

The buffer is always valid.

Bug-Id: CID 700682

This is needed because Icecast since version 2.4.1 doesn't default
to audio/mpeg anymore. AVOption default not used here, since a later
check if -content_type is set is performed and would break.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This allows for proper error reporting. Only do
this for non-legacy requests as only Icecast >2.4.0
will reply with a proper status.
Libav seems to accept both, 100 and 200 status codes, but
let's stay close to spec.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

CC: libav-stable@libav.org
Bug-Id: CID 1163851

CC: libav-stable@libav.org
Bug-Id: CID 29585 / CID 700759

CC: libav-stable@libav.org
Bug-Id: CID 1198259

CC: libav-devel@libav.org
Bug-Id: CID 608084 / CID 700724

CC: libav-stable@libav.org
Bug-Id: CID 1026771 / CID 1026772 / CID 1026773

CC: libav-stable@libav.org
Bug-Id: CID 747723

CC: libav-stable@libav.org
Bug-Id: CID 1135737

CC: libav-stable@libav.org
Bug-Id: CID 1135738

CC: libav-stable@libav.org
Bug-Id: CID 1135739

CC: libav-stable@libav.org
Bug-Id: CID 1135740

Avoid a possible negative bitshift.

CC: libav-stable@libav.org
Bug-Id: CID 1194400

CC: libav-stable@libav.org
Bug-Id: CID 700751 / CID 700752

Makes coverity less confused.

CC: libav-stable@libav.org
Bug-Id: CID 1203487