diff options
Diffstat (limited to 'sid/sidplay-libs-2.1.0/libsidplay/src/mixer.cpp')
| -rw-r--r-- | sid/sidplay-libs-2.1.0/libsidplay/src/mixer.cpp | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/sid/sidplay-libs-2.1.0/libsidplay/src/mixer.cpp b/sid/sidplay-libs-2.1.0/libsidplay/src/mixer.cpp deleted file mode 100644 index c7703dc1..00000000 --- a/sid/sidplay-libs-2.1.0/libsidplay/src/mixer.cpp +++ /dev/null @@ -1,180 +0,0 @@ -/*************************************************************************** - 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 |