curioustorvald/tsvm
1
0
Fork 0
mirror of https://github.com/curioustorvald/tsvm.git synced 2026-03-14 23:16:06 +09:00
Code Issues Packages Projects Releases Wiki Activity

deploying mp2 player

Browse Source
This commit is contained in:
minjaesong
2023-01-15 16:42:09 +09:00
parent 6cb45f6d50
commit af03ab23aa
8 changed files with 226 additions and 969 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
tsvm_core/src/net/torvald/tsvm/AudioJSR223Delegate.kt
View File

@@ -80,6 +80,31 @@ class AudioJSR223Delegate(private val vm: VM) {
/*
js-mp3
https://github.com/soundbus-technologies/js-mp3
Copyright (c) 2018 SoundBus Technologies CO., LTD.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
private val synthNWin = Array(64) { i -> FloatArray(32) { j -> cos(((16 + i) * (2 * j + 1)) * (Math.PI / 64.0)).toFloat() } }
private val synthDtbl = floatArrayOf(
0.000000000f, -0.000015259f, -0.000015259f, -0.000015259f,
@@ -408,6 +433,48 @@ class AudioJSR223Delegate(private val vm: VM) {
/*
mp2dec.js JavaScript MPEG-1 Audio Layer II decoder
Copyright (C) 2011 Liam Wilson
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/.
*/
/* Note this is a port of kjmp2 by Martin J. Fiedler: */
/******************************************************************************
** kjmp2 -- a minimal MPEG-1 Audio Layer II decoder library **
*******************************************************************************
** Copyright (C) 2006 Martin J. Fiedler martin.fiedler@gmx.net **
** **
** This software is provided 'as-is', without any express or implied **
** warranty. In no event will the authors be held liable for any damages **
** arising from the use of this software. **
** **
** Permission is granted to anyone to use this software for any purpose, **
** including commercial applications, and to alter it and redistribute it **
** freely, subject to the following restrictions: **
** 1. The origin of this software must not be misrepresented; you must not **
** claim that you wrote the original software. If you use this software **
** in a product, an acknowledgment in the product documentation would **
** be appreciated but is not required. **
** 2. Altered source versions must be plainly marked as such, and must not **
** be misrepresented as being the original software. **
** 3. This notice may not be removed or altered from any source **
** distribution. **
******************************************************************************/
private var mp2_frame: Long? = null; // ptr
private var STEREO=0;
// #define JOINT_STEREO 1
@@ -563,7 +630,6 @@ class AudioJSR223Delegate(private val vm: VM) {
var V: Array<IntArray> = Array(2) { IntArray(1024) }
)
fun createNewMP2context() = MP2()
private fun show_bits(bit_count: Int) = (mp2_bit_window shr (24 - (bit_count)));
private fun get_bits(bit_count: Int): Int {
@@ -577,7 +643,9 @@ class AudioJSR223Delegate(private val vm: VM) {
return result;
}
fun kjmp2_init(mp2: MP2) {
fun mp2Init(): MP2 {
val mp2 = MP2()
// check if global initialization is required
if (!mp2_initialized) {
mp2_initialized = true;
@@ -591,6 +659,8 @@ class AudioJSR223Delegate(private val vm: VM) {
};
mp2.Voffs = 0;
mp2.id = KJMP2_MAGIC;
return mp2
};
private fun kjmp2_get_sample_rate(frame: Long?): Int {
@@ -652,9 +722,26 @@ class AudioJSR223Delegate(private val vm: VM) {
private var mp2_sample = Array(2) { Array(32) { IntArray(3) } }
fun mp2GetInitialFrameSize(bytes: IntArray): Int {
val b0 = bytes[0]
val b1 = bytes[1]
val b2 = bytes[2]
// check sync pattern
if ((b0 != 0xFF) || (b1 != 0xFD) || ((b2 - 0x10) >= 0xE0)) {
throw Error("Not a MP2 Frame Head: ${listOf(b0, b1, b2).map { it.toString(16).padStart(2,'0') }.joinToString(" ")}")
}
fun kjmp2_decode_frame(mp2: MP2, framePtr: Long?, pcm: Boolean, outL: Long, outR: Long): IntArray {
val sampling_frequency = (b2 shr 2) and 3
val bit_rate_index_minus1 = ((b2 shr 4) and 15) - 1
if (bit_rate_index_minus1 > 13){
throw Error("Invalid bit rate") // invalid bit rate or 'free format'
}
val padding_bit = b2.shr(1) and 1
return Math.floor(144000.0 * mp2_bitrates[bit_rate_index_minus1] / mp2_sample_rates[sampling_frequency]).toInt() + padding_bit
}
fun mp2DecodeFrame(mp2: MP2, framePtr: Long?, pcm: Boolean, outL: Long, outR: Long): IntArray {
var pushSizeL = 0
var pushSizeR = 0
@@ -880,7 +967,6 @@ class AudioJSR223Delegate(private val vm: VM) {
if (pushSizeL != pushSizeR && pushSizeR > 0) {
throw Error("Push size mismatch -- U${pushSizeL} != R${pushSizeR}")
}
println(pushSizeL)
return intArrayOf(frame_size, pushSizeL);
// return intArrayOf(frame_size, 2304);
};