@spice-project/spice-html5
Version:
Spice Javascript client
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JavaScript
;
/*
Copyright (C) 2012 by Jeremy P. White <jwhite@codeweavers.com>
This file is part of spice-html5.
spice-html5 is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
spice-html5 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with spice-html5. If not, see <http://www.gnu.org/licenses/>.
*/
import { KeyNames } from './atKeynames.js';
/*----------------------------------------------------------------------------
** Utility settings and functions for Spice
**--------------------------------------------------------------------------*/
var DEBUG = 0;
var PLAYBACK_DEBUG = 0;
var STREAM_DEBUG = 0;
var DUMP_DRAWS = false;
var DUMP_CANVASES = false;
/*----------------------------------------------------------------------------
** We use an Image temporarily, and the image/src does not get garbage
** collected as quickly as we might like. This blank image helps with that.
**--------------------------------------------------------------------------*/
var EMPTY_GIF_IMAGE = "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=";
/*----------------------------------------------------------------------------
** combine_array_buffers
** Combine two array buffers.
** FIXME - this can't be optimal. See wire.js about eliminating the need.
**--------------------------------------------------------------------------*/
function combine_array_buffers(a1, a2)
{
var in1 = new Uint8Array(a1);
var in2 = new Uint8Array(a2);
var ret = new ArrayBuffer(a1.byteLength + a2.byteLength);
var out = new Uint8Array(ret);
var o = 0;
var i;
for (i = 0; i < in1.length; i++)
out[o++] = in1[i];
for (i = 0; i < in2.length; i++)
out[o++] = in2[i];
return ret;
}
/*----------------------------------------------------------------------------
** hexdump_buffer
**--------------------------------------------------------------------------*/
function hexdump_buffer(a)
{
var mg = new Uint8Array(a);
var hex = "";
var str = "";
var last_zeros = 0;
for (var i = 0; i < mg.length; i++)
{
var h = Number(mg[i]).toString(16);
if (h.length == 1)
hex += "0";
hex += h + " ";
if (mg[i] == 10 || mg[i] == 13 || mg[i] == 8)
str += ".";
else
str += String.fromCharCode(mg[i]);
if ((i % 16 == 15) || (i == (mg.length - 1)))
{
while (i % 16 != 15)
{
hex += " ";
i++;
}
if (last_zeros == 0)
console.log(hex + " | " + str);
if (hex == "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ")
{
if (last_zeros == 1)
{
console.log(".");
last_zeros++;
}
else if (last_zeros == 0)
last_zeros++;
}
else
last_zeros = 0;
hex = str = "";
}
}
}
/*----------------------------------------------------------------------------
** Convert arraybuffer to string
**--------------------------------------------------------------------------*/
function arraybuffer_to_str(buf) {
return String.fromCharCode.apply(null, new Uint16Array(buf));
}
/*----------------------------------------------------------------------------
** Converting keycodes to AT scancodes is very hard.
** luckly there are some resources on the web and in the Xorg driver that help
** us figure out what browser dependent keycodes match to what scancodes.
**
** This will most likely not work for non US keyboard and browsers other than
** modern Chrome and FireFox.
**--------------------------------------------------------------------------*/
var common_scanmap = [];
common_scanmap['Q'.charCodeAt(0)] = KeyNames.KEY_Q;
common_scanmap['W'.charCodeAt(0)] = KeyNames.KEY_W;
common_scanmap['E'.charCodeAt(0)] = KeyNames.KEY_E;
common_scanmap['R'.charCodeAt(0)] = KeyNames.KEY_R;
common_scanmap['T'.charCodeAt(0)] = KeyNames.KEY_T;
common_scanmap['Y'.charCodeAt(0)] = KeyNames.KEY_Y;
common_scanmap['U'.charCodeAt(0)] = KeyNames.KEY_U;
common_scanmap['I'.charCodeAt(0)] = KeyNames.KEY_I;
common_scanmap['O'.charCodeAt(0)] = KeyNames.KEY_O;
common_scanmap['P'.charCodeAt(0)] = KeyNames.KEY_P;
common_scanmap['A'.charCodeAt(0)] = KeyNames.KEY_A;
common_scanmap['S'.charCodeAt(0)] = KeyNames.KEY_S;
common_scanmap['D'.charCodeAt(0)] = KeyNames.KEY_D;
common_scanmap['F'.charCodeAt(0)] = KeyNames.KEY_F;
common_scanmap['G'.charCodeAt(0)] = KeyNames.KEY_G;
common_scanmap['H'.charCodeAt(0)] = KeyNames.KEY_H;
common_scanmap['J'.charCodeAt(0)] = KeyNames.KEY_J;
common_scanmap['K'.charCodeAt(0)] = KeyNames.KEY_K;
common_scanmap['L'.charCodeAt(0)] = KeyNames.KEY_L;
common_scanmap['Z'.charCodeAt(0)] = KeyNames.KEY_Z;
common_scanmap['X'.charCodeAt(0)] = KeyNames.KEY_X;
common_scanmap['C'.charCodeAt(0)] = KeyNames.KEY_C;
common_scanmap['V'.charCodeAt(0)] = KeyNames.KEY_V;
common_scanmap['B'.charCodeAt(0)] = KeyNames.KEY_B;
common_scanmap['N'.charCodeAt(0)] = KeyNames.KEY_N;
common_scanmap['M'.charCodeAt(0)] = KeyNames.KEY_M;
common_scanmap[' '.charCodeAt(0)] = KeyNames.KEY_Space;
common_scanmap[13] = KeyNames.KEY_Enter;
common_scanmap[27] = KeyNames.KEY_Escape;
common_scanmap[8] = KeyNames.KEY_BackSpace;
common_scanmap[9] = KeyNames.KEY_Tab;
common_scanmap[16] = KeyNames.KEY_ShiftL;
common_scanmap[17] = KeyNames.KEY_LCtrl;
common_scanmap[18] = KeyNames.KEY_Alt;
common_scanmap[20] = KeyNames.KEY_CapsLock;
common_scanmap[144] = KeyNames.KEY_NumLock;
common_scanmap[112] = KeyNames.KEY_F1;
common_scanmap[113] = KeyNames.KEY_F2;
common_scanmap[114] = KeyNames.KEY_F3;
common_scanmap[115] = KeyNames.KEY_F4;
common_scanmap[116] = KeyNames.KEY_F5;
common_scanmap[117] = KeyNames.KEY_F6;
common_scanmap[118] = KeyNames.KEY_F7;
common_scanmap[119] = KeyNames.KEY_F8;
common_scanmap[120] = KeyNames.KEY_F9;
common_scanmap[121] = KeyNames.KEY_F10;
common_scanmap[122] = KeyNames.KEY_F11;
common_scanmap[123] = KeyNames.KEY_F12;
/* These extended scancodes do not line up with values from atKeynames */
common_scanmap[42] = 99;
common_scanmap[19] = 101; // Break
common_scanmap[111] = 0xE035; // KP_Divide
common_scanmap[106] = 0xE037; // KP_Multiply
common_scanmap[36] = 0xE047; // Home
common_scanmap[38] = 0xE048; // Up
common_scanmap[33] = 0xE049; // PgUp
common_scanmap[37] = 0xE04B; // Left
common_scanmap[39] = 0xE04D; // Right
common_scanmap[35] = 0xE04F; // End
common_scanmap[40] = 0xE050; // Down
common_scanmap[34] = 0xE051; // PgDown
common_scanmap[45] = 0xE052; // Insert
common_scanmap[46] = 0xE053; // Delete
common_scanmap[44] = 0x2A37; // Print
/* These are not common between ALL browsers but are between Firefox and DOM3 */
common_scanmap['1'.charCodeAt(0)] = KeyNames.KEY_1;
common_scanmap['2'.charCodeAt(0)] = KeyNames.KEY_2;
common_scanmap['3'.charCodeAt(0)] = KeyNames.KEY_3;
common_scanmap['4'.charCodeAt(0)] = KeyNames.KEY_4;
common_scanmap['5'.charCodeAt(0)] = KeyNames.KEY_5;
common_scanmap['6'.charCodeAt(0)] = KeyNames.KEY_6;
common_scanmap['7'.charCodeAt(0)] = KeyNames.KEY_7;
common_scanmap['8'.charCodeAt(0)] = KeyNames.KEY_8;
common_scanmap['9'.charCodeAt(0)] = KeyNames.KEY_9;
common_scanmap['0'.charCodeAt(0)] = KeyNames.KEY_0;
common_scanmap[145] = KeyNames.KEY_ScrollLock;
common_scanmap[103] = KeyNames.KEY_KP_7;
common_scanmap[104] = KeyNames.KEY_KP_8;
common_scanmap[105] = KeyNames.KEY_KP_9;
common_scanmap[100] = KeyNames.KEY_KP_4;
common_scanmap[101] = KeyNames.KEY_KP_5;
common_scanmap[102] = KeyNames.KEY_KP_6;
common_scanmap[107] = KeyNames.KEY_KP_Plus;
common_scanmap[97] = KeyNames.KEY_KP_1;
common_scanmap[98] = KeyNames.KEY_KP_2;
common_scanmap[99] = KeyNames.KEY_KP_3;
common_scanmap[96] = KeyNames.KEY_KP_0;
common_scanmap[110] = KeyNames.KEY_KP_Decimal;
common_scanmap[191] = KeyNames.KEY_Slash;
common_scanmap[190] = KeyNames.KEY_Period;
common_scanmap[188] = KeyNames.KEY_Comma;
common_scanmap[220] = KeyNames.KEY_BSlash;
common_scanmap[192] = KeyNames.KEY_Tilde;
common_scanmap[222] = KeyNames.KEY_Quote;
common_scanmap[219] = KeyNames.KEY_LBrace;
common_scanmap[221] = KeyNames.KEY_RBrace;
common_scanmap[91] = 0xE05B; //KeyNames.KEY_LMeta
common_scanmap[92] = 0xE05C; //KeyNames.KEY_RMeta
common_scanmap[93] = 0xE05D; //KeyNames.KEY_Menu
/* Firefox/Mozilla codes */
var firefox_scanmap = [];
firefox_scanmap[173] = KeyNames.KEY_Minus;
firefox_scanmap[109] = KeyNames.KEY_Minus;
firefox_scanmap[61] = KeyNames.KEY_Equal;
firefox_scanmap[59] = KeyNames.KEY_SemiColon;
/* DOM3 codes */
var DOM_scanmap = [];
DOM_scanmap[189] = KeyNames.KEY_Minus;
DOM_scanmap[187] = KeyNames.KEY_Equal;
DOM_scanmap[186] = KeyNames.KEY_SemiColon;
function get_scancode(code)
{
if (common_scanmap[code] === undefined)
{
if (navigator.userAgent.indexOf("Firefox") != -1)
return firefox_scanmap[code];
else
return DOM_scanmap[code];
}
else
return common_scanmap[code];
}
function keycode_to_start_scan(code)
{
var scancode = get_scancode(code);
if (scancode === undefined)
{
alert('no map for ' + code);
return 0;
}
if (scancode < 0x100) {
return scancode;
} else {
return 0xe0 | ((scancode - 0x100) << 8);
}
}
function keycode_to_end_scan(code)
{
var scancode = get_scancode(code);
if (scancode === undefined)
return 0;
if (scancode < 0x100) {
return scancode | 0x80;
} else {
return 0x80e0 | ((scancode - 0x100) << 8);
}
}
function dump_media_element(m)
{
var ret =
"[networkState " + m.networkState +
"|readyState " + m.readyState +
"|error " + m.error +
"|seeking " + m.seeking +
"|duration " + m.duration +
"|paused " + m.paused +
"|ended " + m.error +
"|buffered " + dump_timerange(m.buffered) +
"]";
return ret;
}
function dump_media_source(ms)
{
var ret =
"[duration " + ms.duration +
"|readyState " + ms.readyState + "]";
return ret;
}
function dump_source_buffer(sb)
{
var ret =
"[appendWindowStart " + sb.appendWindowStart +
"|appendWindowEnd " + sb.appendWindowEnd +
"|buffered " + dump_timerange(sb.buffered) +
"|timeStampOffset " + sb.timeStampOffset +
"|updating " + sb.updating +
"]";
return ret;
}
function dump_timerange(tr)
{
var ret;
if (tr)
{
var i = tr.length;
ret = "{len " + i;
if (i > 0)
ret += "; start " + tr.start(0) + "; end " + tr.end(i - 1);
ret += "}";
}
else
ret = "N/A";
return ret;
}
export {
DEBUG,
PLAYBACK_DEBUG,
STREAM_DEBUG,
DUMP_DRAWS,
DUMP_CANVASES,
EMPTY_GIF_IMAGE,
combine_array_buffers,
hexdump_buffer,
arraybuffer_to_str,
keycode_to_start_scan,
keycode_to_end_scan,
dump_media_element,
dump_media_source,
dump_source_buffer,
};