forked from mia/Aegisub
1e0f08c0ed
Use boost::filesystem::path for all paths, and std::string for all other strings, converting to/from wxString as close to the actual uses of wx as possible. Where possible, replace the uses of non-UI wxWidgets functionality with the additions to the standard library in C++11, or the equivalents in boost. Move the path token management logic to libaegisub (and rewrite it in the process). Add a basic thread pool based on asio and std::thread to libaegisub. This touches nearly every file in the project and a nontrivial amount of code had to be rewritten entirely, so there's probably a lot of broken stuff.
85 lines
3.4 KiB
C++
85 lines
3.4 KiB
C++
// Copyright (c) 2005-2006, Rodrigo Braz Monteiro, Fredrik Mellbin
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of the Aegisub Group nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Aegisub Project http://www.aegisub.org/
|
|
|
|
/// @file audio_provider_dummy.cpp
|
|
/// @brief Dummy (silence or noise) audio provider
|
|
/// @ingroup audio_input
|
|
///
|
|
|
|
#include "config.h"
|
|
|
|
#include "audio_provider_dummy.h"
|
|
#include "utils.h"
|
|
|
|
#include <libaegisub/fs.h>
|
|
|
|
#include <boost/algorithm/string/predicate.hpp>
|
|
|
|
/*
|
|
* scheme ::= "dummy-audio" ":" signal-specifier "?" signal-parameters
|
|
* signal-specifier ::= "silence" | "noise" | "sine" "/" frequency
|
|
* frequency ::= integer
|
|
* signal-parameters ::= signal-parameter [ "&" signal-parameters ]
|
|
* signal-parameter ::= signal-parameter-name "=" integer
|
|
* signal-parameter-name ::= "sr" | "bd" | "ch" | "ln"
|
|
*
|
|
* Signal types:
|
|
* "silence", a silent signal is generated.
|
|
* "noise", a white noise signal is generated.
|
|
* "sine", a sine wave is generated at the specified frequency.
|
|
*
|
|
* Signal parameters:
|
|
* "sr", sample rate to generate signal at.
|
|
* "bd", bit depth to generate signal at (usually 16).
|
|
* "ch", number of channels to generate, usually 1 or 2. The same signal is generated
|
|
* in every channel even if one would be LFE.
|
|
* "ln", length of signal in samples. ln/sr gives signal length in seconds.
|
|
*/
|
|
DummyAudioProvider::DummyAudioProvider(agi::fs::path const& uri) {
|
|
if (!boost::starts_with(uri.string(), "dummy-audio:"))
|
|
throw agi::fs::FileNotFound(std::string("Not a dummy audio URI"));
|
|
|
|
noise = boost::contains(uri.string(), ":noise?");
|
|
channels = 1;
|
|
sample_rate = 44100;
|
|
bytes_per_sample = 2;
|
|
float_samples = false;
|
|
num_samples = (int64_t)5*30*60*1000 * sample_rate / 1000;
|
|
}
|
|
|
|
void DummyAudioProvider::FillBuffer(void *buf, int64_t, int64_t count) const {
|
|
if (noise) {
|
|
short *workbuf = (short*)buf;
|
|
while (count-- > 0)
|
|
*workbuf++ = (rand() - RAND_MAX/2) * 10000 / RAND_MAX;
|
|
}
|
|
else {
|
|
memset(buf, 0, count * bytes_per_sample);
|
|
}
|
|
}
|