This includes convenience routines specifying the album gain should
 be applied and for parsing the tag.

In commit 41c29626 I claimed that it was not worth the
 machinery to buffer an extra page to avoid a seek when we have
 continued packet data.
That was a little unsatisfying, considering how much effort we make
 to avoid unnecessary seeking elsewhere, but in the general case,
 we might have to buffer an arbitrary number of pages, since a
 packet can span several.
However, we already have the mechanism to do this buffering: the
 ogg_stream_state.
There are a number of potentially nasty corner-cases, but libogg's
 page sequence number tracking prevents us from accidentally gluing
 extraneous packet data onto some other unsuspecting packet, so I
 believe the chance of introducing new bugs here is manageable.

This reduces the number of seeks in Simon Jackson's continued-page
 test case by over 23%.

This also means we can handle pages without useful timestamps
 (including those multiplexed from another stream) between the last
 timestamped page at or before our target and the first timestamped
 page after our target without any additional seeks.
Previously we would scan all of this data, see that the
 'page_offset' of the most recent page we read was way beyond
 'best' (the end of the last timestamped page before our target),
 and then seek back and scan it all again.
This should greatly reduce the number of seeks we need in
 multiplexed streams, even if there are no continued packets.

We avoid seeking when the seek target lies within the packets
 buffered from the current page.
However, the calculation of the page start time was _adding_ the
 first packet's duration to its end time, instead of subtracting
 it.

When assertions are disabled, nothing else uses header_len.

If the packet where we wanted to start decoding was continued from
 a previous page, and _other_ packets ended on that previous page,
 we wouldn't feed the previous page to the ogg_stream_state.
That meant we wouldn't get the packet we wanted, and would fail with
 OP_EBADLINK (because the starting PCM offset of the first packet we
 did decode would already be after the one we wanted).

Instead, check for continued packet data and feed in an extra page
 to prime the stream state.

Thanks to Simon Jackson for the report and the excellent test case.

autoreconf looks for ACLOCAL_*FLAGS in Makefile.am and will
pass that on when it invokes aclocal. Furthermore, setting
a local like this doesn't make it available to subcommands,
so the line has no effect.

- Added new configure option --disable-examples which can be used to
  stop the example programs being built. This can be useful in some
  situations, such as when cross compiling static libraries.

- Examples are still built by default, --disable-examples must be passed
  explicitly to stop them being built.

Signed-off-by: Ralph Giles <giles@thaumas.net>

OS X 10.5.8 does not define AI_NUMIERCSERV either, so instead of
 trying to enumerate the platforms that don't, just test for the
 value itself.
Patch by Dave Evans at MacPorts.

Fixes #2172

Add some newer generated files.

No ABI changes. Error behaviour has changed, but that falls
under 'compatible'.

Thomas Klausner authored 10 years ago and Timothy B. Terriberry committed 10 years ago

Needed at least on NetBSD.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>

If an Opus stream is currently multiplexed with other streams, we
 would have to scan the whole file to identify the pages that
 belong to just the stream we play back.
That's probably not what the user wants, and if it is, they have a
 way to do that (using op_bitrate_instant()).
Document this so as not to surprise developers.

Thanks to Lithopsian for the report.

Makes style slightly more consistent.
Also fixes the return code of op_fetch_headers() to make it
 consistently return OP_EBADHEADER if the stream runs out of pages
 after a valid OpusHead packet is found.
Previously, if a valid OpusHead was found, it would return
 OP_ENOTFORMAT if it ran out of pages before finding one without
 its BOS flag set, and OP_EBADHEADER if it ran out of pages after
 finding one without its BOS flag set.

width=height=depth=colors=0 should be allowed, but wasn't thanks to
 some missing parentheses.
Thanks to Lithopsian for the report.

We were skipping the BOS page for non-Opus streams, but never read
 in the next page, causing setup to fail with a duplicate serial
 number validation error.
Thanks to Lithopsian for the report.

It helps to increment the comment count.
Thanks to lithopsian for the report.

Thanks to gmaxwell for the report.

We've added tag copy/compare, server_info, decode_cb, set_dither.
Constification is backward-compatible.

Automake 1.14.1 warns that this will become the default in the future
and advises enabling this, I assume to catch conflicts. We already
use this option in the opus library.

These should use the same macros as the rest of the code.

This was meant to affect file opening only, not stream info
 printing.

This reverts commit 8638d78c.
Since it doesn't actually fix the original problem with shallow clones,
it returns just a hash, not something we (currently) can extract as a
version string in the form things are expecting.  Which means the .pc
version checks for things using the library at least will still fail.

RFC 6555 "Happy Eyeballs" has a few recommendations for
 implementing dual requests to hosts with both IPv4 and IPv6 DNS
 entries that differ slightly from how we used to do it.
This commit updates things to follow those recommendations.

Otherwise redirects we'll stuff two requests into the same buffer
 if there's a redirect to another https URL via a proxy.

This separates the state for whether pipelining might be supported
 (HTTP 1.1 responses with a Server header) and for whether it's
 been explicitly disabled (Server headers from known-bad servers).
This does a better job with repeated (and possibly contradictory)
 headers.

This provides a fallback commit id if no tags are available,
for example when doing a shallow clone.

For many Latin1 characters this still worked correctly by pure luck.
Unfortunately, that included my test case.

It was only guaranteed to work in the seekable case.
Thanks to Radio Stadtfilter 96.3Mhz for sending a stream which
 triggered this failure.

All the actual filters are named op_foo_filter(), so
 op_read_native_filter() looked like another one.
Changing the word order should remove the ambiguity.

Don't know if this actually leads to any better code generation,
 but it may make the code a little clearer.

This makes it clear they don't modify the state, which is a useful
 indicator of what is safe to call from the application decode
 callback.

Otherwise we would have failed to open the stream.

This is a little easier to read, and allows us to save some
 subtractions and a comparison.

The increasingly-inaccurately named op_shaped_dither16() can serve
 this role instead, without much additional complexity (perhaps
 less, once you consider the required shuffling around of the
 function parameters).