This commit adds ARM NEON optimized routines for the following procedures
below:
*_compute_peak
*_find_peaks
*_apply_gain_to_buffer
*_mix_buffers_with_gain
*_mix_buffers_no_gain
*_copy_vector
NEON optimized routines have a prefix of: arm_neon_
Previously when the master-bus had more outputs than inputs,
Ardour crashed when the monitor-section was set up.
Removing a master-bus output port calls
Route::output_change_handler (master-bus)
-> Session::reset_monitor_section
which first removes the corresponding monitor-section input,
then output port. The latter triggers
ARDOUR::Route::output_change_handler (monitor-bus).
All with the process-lock held, so at this point in time Ardour
has removed the port-reference but the port still exists in the
backend.
Now the monitor-bus processors are re-configured and
the channel-count is updated. The port that was just removed
and triggered the ::output_change_handler() callback is
re-created.
unable to create port 'Monitor/audio_out 2': failed constructor
This fix changes the monitor-section to use strict-i/o (for plugins)
and also use master-bus output (not input) when configuring
processors.
Ardour's "pbd/i18n.h" needs to be included last,
after any include that may indirectly pull in getext or libintl.
For that reason "pbd/i18n.h" must not be used in header files either.
These are longer be used since Seuqnce has a "force_discrete"
boolen that needs to be taken into account in addition to
user-configurable ControlList _interpolation mode.
`_mm256_cvtss_f32` is only available in avxintrin.h of gcc-8 or
later. There it is defined as
```
extern __inline float
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
_mm256_cvtss_f32 (__m256 __A)
{
return __A[0];
}
```
While explicit `vcurrent[0]` works with gcc-5 and gcc-6,
older gcc-4 fails with the following
error: invalid types 'float __vector__[int]' for array subscript
This fixes symbol mangle for window builds, and offers backwards
compatibility with older systems where the inline _mm256_cvtss_f32
is not defined in avxintrin.h
This commit adds AVX optimized routines for the following
procedures below:
*_compute_peak
*_find_peaks
*_apply_gain_to_buffer
*_mix_buffers_with_gain
*_mix_buffers_no_gain
AVX optimized routine has the prefix of: x86_sse_avx_
Note: mix_buffer_with_gain and mix_buffers_no_gain may prefer
SSE implementaion over AVX if source and destination pointers
are aligned to 16 byte boundaries. Therefore, it will be optimal if
_all_ audio buffers are allocated to 32 byte boundaries to take
full advantage of AVX ISA extension.
Previously when loading old session Route::init() of the master-bus
was called without the "MasterOut" or "MonitorOut" flag being set.
Various conditions that relied on is_master() or is_monitor()
during initialization failed when loading those sessions, leading
to subtle breakage.
This adds a few exceptions to the general preference
"Sound MIDI notes as they are being selected in the editor".
* Select all no longer plays _all_ notes.
* Remain silent when selection is inverted or a range is selected.
* Play no sound when a saved selection is restored on session load.
i18n must be included last, after all template specialization.
Otherwise the following happens:
In file included from ../libs/pbd/pbd/i18n.h:22:
../libs/pbd/pbd/compose.h:122:6: error: call to function 'operator<<' that is neither visible in the template definition nor found by argument-dependent lookup
This fixes an issue with Renoise Redux. The plugin reports the following:
Reported Channel Capabilities (explicit):
[2, 2] [1, 2] [0, 2]
When it is added to an Arodur MIDI track, the 0 in, 2 output variant is
chosen, since Ardour MIDI tracks don't have audio by default.
However the render callback was set uncondionally for all busses. This
lead to issues with this specific plugin.
