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path: root/engines/scumm/players/player_v2base.cpp
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-rw-r--r--engines/scumm/players/player_v2base.cpp654
1 files changed, 654 insertions, 0 deletions
diff --git a/engines/scumm/players/player_v2base.cpp b/engines/scumm/players/player_v2base.cpp
new file mode 100644
index 0000000000..75f1518989
--- /dev/null
+++ b/engines/scumm/players/player_v2base.cpp
@@ -0,0 +1,654 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "scumm/players/player_v2base.h"
+#include "scumm/scumm.h"
+
+#define FREQ_HZ 236 // Don't change!
+
+#define MAX_OUTPUT 0x7fff
+
+namespace Scumm {
+
+const uint8 note_lengths[] = {
+ 0,
+ 0, 0, 2,
+ 0, 3, 4,
+ 5, 6, 8,
+ 9, 12, 16,
+ 18, 24, 32,
+ 36, 48, 64,
+ 72, 96
+};
+
+static const uint16 hull_offsets[] = {
+ 0, 12, 24, 36, 48, 60,
+ 72, 88, 104, 120, 136, 256,
+ 152, 164, 180
+};
+
+static const int16 hulls[] = {
+ // hull 0
+ 3, -1, 0, 0, 0, 0, 0, 0,
+ 0, -1, 0, 0,
+ // hull 1 (staccato)
+ 3, -1, 0, 32, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+ // hull 2 (legato)
+ 3, -1, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0,
+ // hull 3 (staccatissimo)
+ 3, -1, 0, 2, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+ // hull 4
+ 3, -1, 0, 6, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+ // hull 5
+ 3, -1, 0, 16, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+ // hull 6
+ (int16) 60000, -1, -1000, 20, 0, 0, 0, 0,
+ (int16) 40000, -1, -5000, 5, 0, -1, 0, 0,
+ // hull 7
+ (int16) 50000, -1, 0, 8, 30000, -1, 0, 0,
+ 28000, -1, -5000, 5, 0, -1, 0, 0,
+ // hull 8
+ (int16) 60000, -1, -2000, 16, 0, 0, 0, 0,
+ 28000, -1, -6000, 5, 0, -1, 0, 0,
+ // hull 9
+ (int16) 55000, -1, 0, 8, (int16) 35000, -1, 0, 0,
+ (int16) 40000, -1, -2000, 10, 0, -1, 0, 0,
+ // hull 10
+ (int16) 60000, -1, 0, 4, -2000, 8, 0, 0,
+ (int16) 40000, -1, -6000, 5, 0, -1, 0, 0,
+ // hull 12
+ 0, -1, 150, 340, -150, 340, 0, -1,
+ 0, -1, 0, 0,
+ // hull 13 == 164
+ 20000, -1, 4000, 7, 1000, 15, 0, 0,
+ (int16) 35000, -1, -2000, 15, 0, -1, 0, 0,
+
+ // hull 14 == 180
+ (int16) 35000, -1, 500, 20, 0, 0, 0, 0,
+ (int16) 45000, -1, -500, 60, 0, -1, 0, 0,
+
+ // hull misc = 196
+ (int16) 44000, -1, -4400, 10, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 53000, -1, -5300, 10, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 63000, -1, -6300, 10, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 44000, -1, -1375, 32, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 53000, -1, -1656, 32, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ // hull 11 == 256
+ (int16) 63000, -1, -1968, 32, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 44000, -1, - 733, 60, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 53000, -1, - 883, 60, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 63000, -1, -1050, 60, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 44000, -1, - 488, 90, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 53000, -1, - 588, 90, 0, -1, 0, 0,
+ 0, -1, 0, 0,
+
+ (int16) 63000, -1, - 700, 90, 0, -1, 0, 0,
+ 0, -1, 0, 0
+};
+
+static const uint16 freqmod_lengths[] = {
+ 0x1000, 0x1000, 0x20, 0x2000, 0x1000
+};
+
+static const uint16 freqmod_offsets[] = {
+ 0, 0x100, 0x200, 0x302, 0x202
+};
+
+static const int8 freqmod_table[0x502] = {
+ 0, 3, 6, 9, 12, 15, 18, 21,
+ 24, 27, 30, 33, 36, 39, 42, 45,
+ 48, 51, 54, 57, 59, 62, 65, 67,
+ 70, 73, 75, 78, 80, 82, 85, 87,
+ 89, 91, 94, 96, 98, 100, 102, 103,
+ 105, 107, 108, 110, 112, 113, 114, 116,
+ 117, 118, 119, 120, 121, 122, 123, 123,
+ 124, 125, 125, 126, 126, 126, 126, 126,
+ 126, 126, 126, 126, 126, 126, 125, 125,
+ 124, 123, 123, 122, 121, 120, 119, 118,
+ 117, 116, 114, 113, 112, 110, 108, 107,
+ 105, 103, 102, 100, 98, 96, 94, 91,
+ 89, 87, 85, 82, 80, 78, 75, 73,
+ 70, 67, 65, 62, 59, 57, 54, 51,
+ 48, 45, 42, 39, 36, 33, 30, 27,
+ 24, 21, 18, 15, 12, 9, 6, 3,
+ 0, -3, -6, -9, -12, -15, -18, -21,
+ -24, -27, -30, -33, -36, -39, -42, -45,
+ -48, -51, -54, -57, -59, -62, -65, -67,
+ -70, -73, -75, -78, -80, -82, -85, -87,
+ -89, -91, -94, -96, -98,-100,-102,-103,
+ -105,-107,-108,-110,-112,-113,-114,-116,
+ -117,-118,-119,-120,-121,-122,-123,-123,
+ -124,-125,-125,-126,-126,-126,-126,-126,
+ -126,-126,-126,-126,-126,-126,-125,-125,
+ -124,-123,-123,-122,-121,-120,-119,-118,
+ -117,-116,-114,-113,-112,-110,-108,-107,
+ -105,-103,-102,-100, -98, -96, -94, -91,
+ -89, -87, -85, -82, -80, -78, -75, -73,
+ -70, -67, -65, -62, -59, -57, -54, -51,
+ -48, -45, -42, -39, -36, -33, -30, -27,
+ -24, -21, -18, -15, -12, -9, -6, -3,
+
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15,
+ 16, 17, 18, 19, 20, 21, 22, 23,
+ 24, 25, 26, 27, 28, 29, 30, 31,
+ 32, 33, 34, 35, 36, 37, 38, 39,
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
+ 56, 57, 58, 59, 60, 61, 62, 63,
+ 64, 65, 66, 67, 68, 69, 70, 71,
+ 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83, 84, 85, 86, 87,
+ 88, 89, 90, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 123, 124, 125, 126, 127,
+ -128,-127,-126,-125,-124,-123,-122,-121,
+ -120,-119,-118,-117,-116,-115,-114,-113,
+ -112,-111,-110,-109,-108,-107,-106,-105,
+ -104,-103,-102,-101,-100, -99, -98, -97,
+ -96, -95, -94, -93, -92, -91, -90, -89,
+ -88, -87, -86, -85, -84, -83, -82, -81,
+ -80, -79, -78, -77, -76, -75, -74, -73,
+ -72, -71, -70, -69, -68, -67, -66, -65,
+ -64, -63, -62, -61, -60, -59, -58, -57,
+ -56, -55, -54, -53, -52, -51, -50, -49,
+ -48, -47, -46, -45, -44, -43, -42, -41,
+ -40, -39, -38, -37, -36, -35, -34, -33,
+ -32, -31, -30, -29, -28, -27, -26, -25,
+ -24, -23, -22, -21, -20, -19, -18, -17,
+ -16, -15, -14, -13, -12, -11, -10, -9,
+ -8, -7, -6, -5, -4, -3, -2, -1,
+
+ -120, 120,
+
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ -120,-120,-120,-120,-120,-120,-120,-120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 120, 120, 120, 120, 120, 120,
+
+ 41, 35, -66,-124, -31, 108, -42, -82,
+ 82,-112, 73, -15, -15, -69, -23, -21,
+ -77, -90, -37, 60,-121, 12, 62,-103,
+ 36, 94, 13, 28, 6, -73, 71, -34,
+ -77, 18, 77, -56, 67, -69,-117, -90,
+ 31, 3, 90, 125, 9, 56, 37, 31,
+ 93, -44, -53, -4,-106, -11, 69, 59,
+ 19, 13,-119, 10, 28, -37, -82, 50,
+ 32,-102, 80, -18, 64, 120, 54, -3,
+ 18, 73, 50, -10, -98, 125, 73, -36,
+ -83, 79, 20, -14, 68, 64, 102, -48,
+ 107, -60, 48, -73, 50, 59, -95, 34,
+ -10, 34,-111, -99, -31,-117, 31, -38,
+ -80, -54,-103, 2, -71, 114, -99, 73,
+ 44,-128, 126, -59,-103, -43, -23,-128,
+ -78, -22, -55, -52, 83, -65, 103, -42,
+ -65, 20, -42, 126, 45, -36,-114, 102,
+ -125, -17, 87, 73, 97, -1, 105,-113,
+ 97, -51, -47, 30, -99,-100, 22, 114,
+ 114, -26, 29, -16,-124, 79, 74, 119,
+ 2, -41, -24, 57, 44, 83, -53, -55,
+ 18, 30, 51, 116, -98, 12, -12, -43,
+ -44, -97, -44, -92, 89, 126, 53, -49,
+ 50, 34, -12, -52, -49, -45,-112, 45,
+ 72, -45,-113, 117, -26, -39, 29, 42,
+ -27, -64, -9, 43, 120,-127,-121, 68,
+ 14, 95, 80, 0, -44, 97,-115, -66,
+ 123, 5, 21, 7, 59, 51,-126, 31,
+ 24, 112,-110, -38, 100, 84, -50, -79,
+ -123, 62, 105, 21, -8, 70, 106, 4,
+ -106, 115, 14, -39, 22, 47, 103, 104,
+ -44, -9, 74, 74, -48, 87, 104, 118,
+ -6, 22, -69, 17, -83, -82, 36,-120,
+ 121, -2, 82, -37, 37, 67, -27, 60,
+ -12, 69, -45, -40, 40, -50, 11, -11,
+ -59, 96, 89, 61,-105, 39,-118, 89,
+ 118, 45, -48, -62, -55, -51, 104, -44,
+ 73, 106, 121, 37, 8, 97, 64, 20,
+ -79, 59, 106, -91, 17, 40, -63,-116,
+ -42, -87, 11,-121,-105,-116, 47, -15,
+ 21, 29,-102,-107, -63,-101, -31, -64,
+ 126, -23, -88,-102, -89,-122, -62, -75,
+ 84, -65,-102, -25, -39, 35, -47, 85,
+ -112, 56, 40, -47, -39, 108, -95, 102,
+ 94, 78, -31, 48,-100, -2, -39, 113,
+ -97, -30, -91, -30, 12,-101, -76, 71,
+ 101, 56, 42, 70,-119, -87,-126, 121,
+ 122, 118, 120, -62, 99, -79, 38, -33,
+ -38, 41, 109, 62, 98, -32,-106, 18,
+ 52, -65, 57, -90, 63,-119, 94, -15,
+ 109, 14, -29, 108, 40, -95, 30, 32,
+ 29, -53, -62, 3, 63, 65, 7,-124,
+ 15, 20, 5, 101, 27, 40, 97, -55,
+ -59, -25, 44,-114, 70, 54, 8, -36,
+ -13, -88,-115, -2, -66, -14, -21, 113,
+ -1, -96, -48, 59, 117, 6,-116, 126,
+ -121, 120, 115, 77, -48, -66,-126, -66,
+ -37, -62, 70, 65, 43,-116, -6, 48,
+ 127, 112, -16, -89, 84,-122, 50,-107,
+ -86, 91, 104, 19, 11, -26, -4, -11,
+ -54, -66, 125, -97,-119,-118, 65, 27,
+ -3, -72, 79, 104, -10, 114, 123, 20,
+ -103, -51, -45, 13, -16, 68, 58, -76,
+ -90, 102, 83, 51, 11, -53, -95, 16
+};
+
+static const uint16 spk_freq_table[12] = {
+ 36484, 34436, 32503, 30679, 28957, 27332,
+ 25798, 24350, 22983, 21693, 20476, 19326
+};
+
+static const uint16 pcjr_freq_table[12] = {
+ 65472, 61760, 58304, 55040, 52032, 49024,
+ 46272, 43648, 41216, 38912, 36736, 34624
+};
+
+
+Player_V2Base::Player_V2Base(ScummEngine *scumm, Audio::Mixer *mixer, bool pcjr)
+ : _vm(scumm),
+ _mixer(mixer),
+ _pcjr(pcjr),
+ _sampleRate(_mixer->getOutputRate()) {
+
+ _isV3Game = (scumm->_game.version >= 3);
+
+ _header_len = (scumm->_game.features & GF_OLD_BUNDLE) ? 4 : 6;
+
+ // Initialize sound queue
+ _current_nr = _next_nr = 0;
+ _current_data = _next_data = 0;
+
+ // Initialize channel code
+ for (int i = 0; i < 4; ++i)
+ clear_channel(i);
+
+ _next_tick = 0;
+ _tick_len = (_sampleRate << FIXP_SHIFT) / FREQ_HZ;
+
+ // Initialize V3 music timer
+ _music_timer_ctr = _music_timer = 0;
+ _ticks_per_music_timer = 65535;
+
+ if (_pcjr) {
+ _freqs_table = pcjr_freq_table;
+ } else {
+ _freqs_table = spk_freq_table;
+ }
+}
+
+Player_V2Base::~Player_V2Base() {
+}
+
+void Player_V2Base::chainSound(int nr, byte *data) {
+ int offset = _header_len + (_pcjr ? 10 : 2);
+
+ _current_nr = nr;
+ _current_data = data;
+
+ for (int i = 0; i < 4; i++) {
+ clear_channel(i);
+
+ _channels[i].d.music_script_nr = nr;
+ if (data) {
+ _channels[i].d.next_cmd = READ_LE_UINT16(data + offset + 2 * i);
+ if (_channels[i].d.next_cmd) {
+ _channels[i].d.time_left = 1;
+ }
+ }
+ }
+ _music_timer = 0;
+}
+
+void Player_V2Base::chainNextSound() {
+ if (_next_nr) {
+ chainSound(_next_nr, _next_data);
+ _next_nr = 0;
+ _next_data = 0;
+ }
+}
+
+// TODO: Merge stopAllSounds, stopSound() and startSound(), using some overriding
+// perhaps? Player_V2CMS's implementations start like that of Player_V2
+// but then add some MIDI related stuff.
+
+void Player_V2Base::clear_channel(int i) {
+ ChannelInfo *channel = &_channels[i];
+ memset(channel, 0, sizeof(ChannelInfo));
+}
+
+int Player_V2Base::getMusicTimer() {
+ if (_isV3Game)
+ return _music_timer;
+ else
+ return _channels[0].d.music_timer;
+}
+
+void Player_V2Base::execute_cmd(ChannelInfo *channel) {
+ uint16 value;
+ int16 offset;
+ uint8 *script_ptr;
+ ChannelInfo * current_channel;
+ ChannelInfo * dest_channel;
+
+ current_channel = channel;
+
+ if (channel->d.next_cmd == 0)
+ goto check_stopped;
+ script_ptr = &_current_data[channel->d.next_cmd];
+
+ for (;;) {
+ uint8 opcode = *script_ptr++;
+ if (opcode >= 0xf8) {
+ switch (opcode) {
+ case 0xf8: // set hull curve
+ debug(7, "channels[%d]: hull curve %2d",
+ (uint)(channel - _channels), *script_ptr);
+ channel->d.hull_curve = hull_offsets[*script_ptr / 2];
+ script_ptr++;
+ break;
+
+ case 0xf9: // set freqmod curve
+ debug(7, "channels[%d]: freqmod curve %2d",
+ (uint)(channel - _channels), *script_ptr);
+ channel->d.freqmod_table = freqmod_offsets[*script_ptr / 4];
+ channel->d.freqmod_modulo = freqmod_lengths[*script_ptr / 4];
+ script_ptr++;
+ break;
+
+ case 0xfd: // clear other channel
+ value = READ_LE_UINT16 (script_ptr) / sizeof (ChannelInfo);
+ debug(7, "clear channel %d", value);
+ script_ptr += 2;
+ // In Indy3, when traveling to Venice a command is
+ // issued to clear channel 4. So we introduce a 4th
+ // channel, which is never used. All OOB accesses are
+ // mapped to this channel.
+ //
+ // The original game had room for 8 channels, but only
+ // channels 0-3 are read, changes to other channels
+ // had no effect.
+ if (value >= ARRAYSIZE (_channels))
+ value = 4;
+ channel = &_channels[value];
+ // fall through
+
+ case 0xfa: // clear current channel
+ if (opcode == 0xfa)
+ debug(7, "clear channel");
+ channel->d.next_cmd = 0;
+ channel->d.base_freq = 0;
+ channel->d.freq_delta = 0;
+ channel->d.freq = 0;
+ channel->d.volume = 0;
+ channel->d.volume_delta = 0;
+ channel->d.inter_note_pause = 0;
+ channel->d.transpose = 0;
+ channel->d.hull_curve = 0;
+ channel->d.hull_offset = 0;
+ channel->d.hull_counter = 0;
+ channel->d.freqmod_table = 0;
+ channel->d.freqmod_offset = 0;
+ channel->d.freqmod_incr = 0;
+ channel->d.freqmod_multiplier = 0;
+ channel->d.freqmod_modulo = 0;
+ break;
+
+ case 0xfb: // ret from subroutine
+ debug(7, "ret from sub");
+ script_ptr = _retaddr;
+ break;
+
+ case 0xfc: // call subroutine
+ offset = READ_LE_UINT16 (script_ptr);
+ debug(7, "subroutine %d", offset);
+ script_ptr += 2;
+ _retaddr = script_ptr;
+ script_ptr = _current_data + offset;
+ break;
+
+ case 0xfe: // loop music
+ opcode = *script_ptr++;
+ offset = READ_LE_UINT16 (script_ptr);
+ script_ptr += 2;
+ debug(7, "loop if %d to %d", opcode, offset);
+ if (!channel->array[opcode / 2] || --channel->array[opcode/2])
+ script_ptr += offset;
+ break;
+
+ case 0xff: // set parameter
+ opcode = *script_ptr++;
+ value = READ_LE_UINT16 (script_ptr);
+ channel->array[opcode / 2] = value;
+ debug(7, "channels[%d]: set param %2d = %5d",
+ (uint)(channel - _channels), opcode, value);
+ script_ptr += 2;
+ if (opcode == 14) {
+ /* tempo var */
+ _ticks_per_music_timer = 125;
+ }
+ if (opcode == 0)
+ goto end;
+ break;
+ }
+ } else { // opcode < 0xf8
+ for (;;) {
+ int16 note, octave;
+ int is_last_note;
+ dest_channel = &_channels[(opcode >> 5) & 3];
+
+ if (!(opcode & 0x80)) {
+
+ int tempo = channel->d.tempo;
+ if (!tempo)
+ tempo = 1;
+ channel->d.time_left = tempo * note_lengths[opcode & 0x1f];
+
+ note = *script_ptr++;
+ is_last_note = note & 0x80;
+ note &= 0x7f;
+ if (note == 0x7f) {
+ debug(8, "channels[%d]: pause %d",
+ (uint)(channel - _channels), channel->d.time_left);
+ goto end;
+ }
+ } else {
+
+ channel->d.time_left = ((opcode & 7) << 8) | *script_ptr++;
+
+ if ((opcode & 0x10)) {
+ debug(8, "channels[%d]: pause %d",
+ (uint)(channel - _channels), channel->d.time_left);
+ goto end;
+ }
+
+ is_last_note = 0;
+ note = (*script_ptr++) & 0x7f;
+ }
+
+ debug(8, "channels[%d]: @%04x note: %3d+%d len: %2d hull: %d mod: %d/%d/%d %s",
+ (uint)(dest_channel - channel), script_ptr ? (uint)(script_ptr - _current_data - 2) : 0,
+ note, (signed short) dest_channel->d.transpose, channel->d.time_left,
+ dest_channel->d.hull_curve, dest_channel->d.freqmod_table,
+ dest_channel->d.freqmod_incr,dest_channel->d.freqmod_multiplier,
+ is_last_note ? "last":"");
+
+ uint16 myfreq;
+ dest_channel->d.time_left = channel->d.time_left;
+ dest_channel->d.note_length =
+ channel->d.time_left - dest_channel->d.inter_note_pause;
+ note += dest_channel->d.transpose;
+ while (note < 0)
+ note += 12;
+ octave = note / 12;
+ note = note % 12;
+ dest_channel->d.hull_offset = 0;
+ dest_channel->d.hull_counter = 1;
+ if (_pcjr && dest_channel == &_channels[3]) {
+ dest_channel->d.hull_curve = 196 + note * 12;
+ myfreq = 384 - 64 * octave;
+ } else {
+ myfreq = _freqs_table[note] >> octave;
+ }
+ dest_channel->d.freq = dest_channel->d.base_freq = myfreq;
+ if (is_last_note)
+ goto end;
+ opcode = *script_ptr++;
+ }
+ }
+ }
+
+end:
+ channel = current_channel;
+ if (channel->d.time_left) {
+ channel->d.next_cmd = script_ptr - _current_data;
+ return;
+ }
+
+ channel->d.next_cmd = 0;
+
+check_stopped:
+ int i;
+ for (i = 0; i < 4; i++) {
+ if (_channels[i].d.time_left)
+ return;
+ }
+
+ _current_nr = 0;
+ _current_data = 0;
+ chainNextSound();
+}
+
+void Player_V2Base::next_freqs(ChannelInfo *channel) {
+ channel->d.volume += channel->d.volume_delta;
+ channel->d.base_freq += channel->d.freq_delta;
+
+ channel->d.freqmod_offset += channel->d.freqmod_incr;
+ if (channel->d.freqmod_offset > channel->d.freqmod_modulo)
+ channel->d.freqmod_offset -= channel->d.freqmod_modulo;
+
+ channel->d.freq =
+ (int) (freqmod_table[channel->d.freqmod_table + (channel->d.freqmod_offset >> 4)])
+ * (int) channel->d.freqmod_multiplier / 256
+ + channel->d.base_freq;
+
+ debug(9, "Freq: %d/%d, %d/%d/%d*%d %d",
+ channel->d.base_freq, (int16)channel->d.freq_delta,
+ channel->d.freqmod_table, channel->d.freqmod_offset,
+ channel->d.freqmod_incr, channel->d.freqmod_multiplier,
+ channel->d.freq);
+
+ if (channel->d.note_length && !--channel->d.note_length) {
+ channel->d.hull_offset = 16;
+ channel->d.hull_counter = 1;
+ }
+
+ if (!--channel->d.time_left) {
+ execute_cmd(channel);
+ }
+
+ if (channel->d.hull_counter && !--channel->d.hull_counter) {
+ for (;;) {
+ const int16 *hull_ptr = hulls
+ + channel->d.hull_curve + channel->d.hull_offset / 2;
+ if (hull_ptr[1] == -1) {
+ channel->d.volume = hull_ptr[0];
+ if (hull_ptr[0] == 0)
+ channel->d.volume_delta = 0;
+ channel->d.hull_offset += 4;
+ } else {
+ channel->d.volume_delta = hull_ptr[0];
+ channel->d.hull_counter = hull_ptr[1];
+ channel->d.hull_offset += 4;
+ break;
+ }
+ }
+ }
+}
+
+void Player_V2Base::nextTick() {
+ for (int i = 0; i < 4; i++) {
+ if (!_channels[i].d.time_left)
+ continue;
+ next_freqs(&_channels[i]);
+ }
+ if (_music_timer_ctr++ >= _ticks_per_music_timer) {
+ _music_timer_ctr = 0;
+ _music_timer++;
+ }
+}
+
+
+} // End of namespace Scumm
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 15:18:47 +0000