sid player is now real plugin (dynamically loaded)

ported sid code to new API
moved to different md5 library
added more md5 functions to plugin API

1 files changed, 180 insertions, 0 deletions

diff --git a/plugins/sid/sidplay-libs/libsidplay/src/mixer.cpp b/plugins/sid/sidplay-libs/libsidplay/src/mixer.cpp
new file mode 100644
index 00000000..c7703dc1
--- /dev/null
+++ b/plugins/sid/sidplay-libs/libsidplay/src/mixer.cpp
@@ -0,0 +1,180 @@
+/***************************************************************************
+                          mixer.cpp  -  Sids Mixer Routines
+                             -------------------
+    begin                : Sun Jul 9 2000
+    copyright            : (C) 2000 by Simon White
+    email                : s_a_white@email.com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+/***************************************************************************
+ *  $Log: mixer.cpp,v $
+ *  Revision 1.10  2002/01/29 21:50:33  s_a_white
+ *  Auto switching to a better emulation mode.  m_tuneInfo reloaded after a
+ *  config.  Initial code added to support more than two sids.
+ *
+ *  Revision 1.9  2001/12/13 08:28:08  s_a_white
+ *  Added namespace support to fix problems with xsidplay.
+ *
+ *  Revision 1.8  2001/11/16 19:25:33  s_a_white
+ *  Removed m_context as where getting mixed with parent class.
+ *
+ *  Revision 1.7  2001/10/02 18:29:32  s_a_white
+ *  Corrected fixed point maths overflow caused by fastforwarding.
+ *
+ *  Revision 1.6  2001/09/17 19:02:38  s_a_white
+ *  Now uses fixed point maths for sample output and rtc.
+ *
+ *  Revision 1.5  2001/07/25 17:02:37  s_a_white
+ *  Support for new configuration interface.
+ *
+ *  Revision 1.4  2001/07/14 12:47:39  s_a_white
+ *  Mixer routines simplified.  Added new and more efficient method of
+ *  determining when an output samples is required.
+ *
+ *  Revision 1.3  2001/03/01 23:46:37  s_a_white
+ *  Support for sample mode to be selected at runtime.
+ *
+ *  Revision 1.2  2000/12/12 22:50:15  s_a_white
+ *  Bug Fix #122033.
+ *
+ ***************************************************************************/
+
+#include "player.h"
+#include "sidendian.h"
+
+const int_least32_t VOLUME_MAX = 255;
+
+SIDPLAY2_NAMESPACE_START
+
+void Player::mixerReset (void)
+{   // Fixed point 16.16
+    m_sampleClock  = m_samplePeriod & 0x0FFFF;
+    // Schedule next sample event
+    (context ()).schedule (&mixerEvent,
+        m_samplePeriod >> 24);
+}
+
+void Player::mixer (void)
+{   // Fixed point 16.16
+    event_clock_t cycles;
+    char   *buf    = m_sampleBuffer + m_sampleIndex;
+    m_sampleClock += m_samplePeriod;
+    cycles         = m_sampleClock >> 16;
+    m_sampleClock &= 0x0FFFF;
+    m_sampleIndex += (this->*output) (buf);
+ 
+    // Schedule next sample event
+    (context ()).schedule (&mixerEvent, cycles);
+
+    // Filled buffer
+    if (m_sampleIndex >= m_sampleCount)
+        m_running = false;
+}
+
+
+//-------------------------------------------------------------------------
+// Generic sound output generation routines
+//-------------------------------------------------------------------------
+inline
+int_least32_t Player::monoOutGenericLeftIn (uint_least8_t bits)
+{
+    return sid[0]->output (bits) * m_leftVolume / VOLUME_MAX;
+}
+
+inline
+int_least32_t Player::monoOutGenericStereoIn (uint_least8_t bits)
+{
+    // Convert to mono
+    return ((sid[0]->output (bits) * m_leftVolume) +
+        (sid[1]->output (bits) * m_rightVolume)) / (VOLUME_MAX * 2);
+}
+
+inline
+int_least32_t Player::monoOutGenericRightIn (uint_least8_t bits)
+{
+    return sid[1]->output (bits) * m_rightVolume / VOLUME_MAX;
+}
+
+
+//-------------------------------------------------------------------------
+// 8 bit sound output generation routines
+//-------------------------------------------------------------------------
+uint_least32_t Player::monoOut8MonoIn (char *buffer)
+{
+    *buffer = (char) monoOutGenericLeftIn (8) ^ '\x80';
+    return sizeof (char);
+}
+
+uint_least32_t Player::monoOut8StereoIn (char *buffer)
+{
+    *buffer = (char) monoOutGenericStereoIn (8) ^ '\x80';
+    return sizeof (char);
+}
+
+uint_least32_t Player::monoOut8StereoRIn (char *buffer)
+{
+    *buffer = (char) monoOutGenericRightIn (8) ^ '\x80';
+    return sizeof (char);
+}
+
+uint_least32_t Player::stereoOut8MonoIn (char *buffer)
+{
+    char sample = (char) monoOutGenericLeftIn (8) ^ '\x80';
+    buffer[0] = sample; 
+    buffer[1] = sample; 
+    return (2 * sizeof (char));
+}
+
+uint_least32_t Player::stereoOut8StereoIn (char *buffer)
+{
+    buffer[0] = (char) monoOutGenericLeftIn  (8) ^ '\x80';
+    buffer[1] = (char) monoOutGenericRightIn (8) ^ '\x80';
+    return (2 * sizeof (char));
+}
+
+//-------------------------------------------------------------------------
+// 16 bit sound output generation routines
+//-------------------------------------------------------------------------
+uint_least32_t Player::monoOut16MonoIn (char *buffer)
+{
+    endian_16 (buffer, (uint_least16_t) monoOutGenericLeftIn (16));
+    return sizeof (uint_least16_t);
+}
+
+uint_least32_t Player::monoOut16StereoIn (char *buffer)
+{
+    endian_16 (buffer, (uint_least16_t) monoOutGenericStereoIn (16));
+    return sizeof (uint_least16_t);
+}
+
+uint_least32_t Player::monoOut16StereoRIn (char *buffer)
+{
+    endian_16 (buffer, (uint_least16_t) monoOutGenericRightIn (16));
+    return sizeof (uint_least16_t);
+}
+
+uint_least32_t Player::stereoOut16MonoIn (char *buffer)
+{
+    uint_least16_t sample = (uint_least16_t) monoOutGenericLeftIn (16);
+    endian_16 (buffer, sample);
+    endian_16 (buffer + sizeof(uint_least16_t), sample);
+    return (2 * sizeof (uint_least16_t));
+}
+
+uint_least32_t Player::stereoOut16StereoIn (char *buffer)
+{
+    endian_16 (buffer, (uint_least16_t) monoOutGenericLeftIn  (16));
+    endian_16 (buffer + sizeof(uint_least16_t),
+               (uint_least16_t) monoOutGenericRightIn (16));
+    return (2 * sizeof (uint_least16_t));
+}
+
+SIDPLAY2_NAMESPACE_STOP