mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
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547 lines
12 KiB
C
547 lines
12 KiB
C
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/*
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* Copyright (c) 2002, 2003, 2004, 2005, 2007 by Christian Nowak <chnowak@web.de>
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* Last update: 20th October, 2007
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*/
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#include "mixer.h"
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#define DO_LOOPING \
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if (forward) \
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{ \
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playpos += incval; \
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if (playpos >= loop_end) \
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{ \
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if (looped) \
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{ \
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if (pingpong) \
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{ \
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forward = !forward; \
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playpos -= incval; \
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} else \
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playpos -= loop_end - loop_start; \
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} else \
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{ \
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playpos = loop_end; \
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vinfo->playing = FALSE; \
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break; \
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} \
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} \
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} else \
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{ \
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playpos -= incval; \
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if (/*playpos <= loop_start*/playpos - loop_start <= incval) \
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{ \
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if (looped) \
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{ \
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if (pingpong) \
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{ \
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forward = !forward; \
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playpos += incval; \
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} else \
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playpos += loop_end - loop_start; \
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} else \
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{ \
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playpos = loop_start; \
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vinfo->playing = FALSE; \
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break; \
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} \
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} \
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}
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#define DO_LOOPING_OLD \
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playpos += incval; \
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if (playpos >= loop_end) \
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{ \
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if (looped) \
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{ \
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playpos -= loop_end-loop_start; \
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} else \
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{ \
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playpos = loop_end; \
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vinfo->playing = FALSE; \
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break; \
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} \
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}
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#define DO_LOOPING_PINGPONG \
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playpos += incval; \
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if (forward && playpos >= loop_end) \
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{ \
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if (looped) \
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{ \
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incval = -incval; \
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forward = FALSE; \
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} else \
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{ \
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playpos = loop_end; \
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vinfo->playing = FALSE; \
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break; \
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} \
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} else \
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if (!forward && playpos <= loop_start) \
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{ \
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if (looped) \
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{ \
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incval = -incval; \
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forward = TRUE; \
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} else \
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{ \
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playpos = loop_start; \
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vinfo->playing = FALSE; \
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break; \
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} \
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}
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int mix_destbufsize(int flags) {
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int size = 1;
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if (flags & MIXER_DEST_STEREO)
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size *= 2;
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if (flags & MIXER_DEST_16BIT)
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size *= 2;
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return size;
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}
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int clearbuf_final(int flags, void *dest, int nSamples) {
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if (flags & MIXER_USE_S32) {
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if (flags & MIXER_DEST_STEREO) {
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clearbuf_s32((s32*)dest, 2, nSamples);
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} else {
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clearbuf_s32((s32*)dest, 1, nSamples);
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}
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}
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return nSamples;
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}
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int mix_final_1616bit(int flags, void *dest, int nSamples, MOD_VOICEINFO16 *vinfo, u8 mainvol) {
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if (flags & MIXER_USE_S32) {
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if (flags & MIXER_DEST_STEREO) {
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if (vinfo->sampleInfo->bit_16) {
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mix_s16m_to_s32s_1616bit((s32*)dest, nSamples, vinfo, mainvol);
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} else {
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mix_s8m_to_s32s_1616bit((s32*)dest, nSamples, vinfo, mainvol);
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}
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} else {
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if (vinfo->sampleInfo->bit_16) {
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mix_s16m_to_s32m_1616bit((s32*)dest, nSamples, vinfo, mainvol);
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} else {
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mix_s8m_to_s32m_1616bit((s32*)dest, nSamples, vinfo, mainvol);
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}
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}
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}
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return nSamples;
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}
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int copybuf_final(int flags, void *dest, void *src, int nSamples) {
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if (flags & MIXER_USE_S32) {
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if (flags & MIXER_DEST_SIGNED) {
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if (flags & MIXER_DEST_16BIT) {
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if (flags & MIXER_DEST_STEREO) {
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copybuf_s32_to_s16((s16*)dest, (s32*)src, 2, nSamples);
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} else {
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copybuf_s32_to_s16((s16*)dest, (s32*)src, 1, nSamples);
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}
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} else {
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if (flags & MIXER_DEST_STEREO) {
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copybuf_s32_to_s8((s8*)dest, (s32*)src, 2, nSamples);
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} else {
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copybuf_s32_to_s8((s8*)dest, (s32*)src, 1, nSamples);
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}
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}
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} else {
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if (flags & MIXER_DEST_16BIT) {
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if (flags & MIXER_DEST_STEREO) {
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copybuf_s32_to_u16((u16*)dest, (s32*)src, 2, nSamples);
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} else {
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copybuf_s32_to_u16((u16*)dest, (s32*)src, 1, nSamples);
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}
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} else {
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if (flags & MIXER_DEST_STEREO) {
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copybuf_s32_to_u8((u8*)dest, (s32*)src, 2, nSamples);
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} else {
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copybuf_s32_to_u8((u8*)dest, (s32*)src, 1, nSamples);
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}
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}
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}
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}
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return nSamples;
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}
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/* Mix s8 mono -> s32 mono, 16.16bit fixed point */
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int mix_s8m_to_s32m_1616bit(s32 *dest, int nSamples, MOD_VOICEINFO16 *vinfo, u8 mainvol) {
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int k;
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s32 volume;
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MIXER_TYPE playpos = vinfo->playpos;
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MIXER_TYPE incval = vinfo->incval;
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MIXER_TYPE loop_end = ((MIXER_TYPE)vinfo->sampleInfo->loop_end) << MIXER_SHIFT;
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MIXER_TYPE loop_start = ((MIXER_TYPE)vinfo->sampleInfo->loop_start) << MIXER_SHIFT;
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BOOL looped = vinfo->sampleInfo->looped;
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BOOL forward = vinfo->forward;
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BOOL pingpong = vinfo->sampleInfo->pingpong;
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s8 *sampledata = vinfo->sampleInfo->sampledata;
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if (!vinfo->playing)
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return nSamples;
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volume = ((s32)vinfo->volume * (s32)mainvol * (s32)vinfo->envVolume) >> 12;
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for (k = 0; k < nSamples; k++) {
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s32 value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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dest[k] += value * volume;
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DO_LOOPING;
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}
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vinfo->playpos = playpos;
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vinfo->forward = forward;
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return nSamples;
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}
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/* Mix s16 mono -> s32 mono, 16.16bit fixed point */
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int mix_s16m_to_s32m_1616bit(s32 *dest, int nSamples, MOD_VOICEINFO16 *vinfo, u8 mainvol) {
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int k;
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s32 volume;
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MIXER_TYPE playpos = vinfo->playpos;
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MIXER_TYPE incval = vinfo->incval;
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MIXER_TYPE loop_end = ((MIXER_TYPE)vinfo->sampleInfo->loop_end) << MIXER_SHIFT;
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MIXER_TYPE loop_start = ((MIXER_TYPE)vinfo->sampleInfo->loop_start) << MIXER_SHIFT;
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BOOL looped = vinfo->sampleInfo->looped;
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BOOL forward = vinfo->forward;
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BOOL pingpong = vinfo->sampleInfo->pingpong;
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s16 *sampledata = vinfo->sampleInfo->sampledata;
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if (!vinfo->playing)
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return nSamples;
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volume = ((s32)vinfo->volume * (s32)mainvol * (s32)vinfo->envVolume) >> 12;
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for (k = 0; k <nSamples; k++) {
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s32 value = (s32)((s16*)sampledata)[playpos >> MIXER_SHIFT];
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dest[k] += value * volume;
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DO_LOOPING;
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}
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vinfo->playpos = playpos;
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vinfo->forward = forward;
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return nSamples;
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}
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/* Mix s8 mono -> s32 stereo, 16.16bit fixed point */
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int mix_s8m_to_s32s_1616bit(s32 *dest, int nSamples, MOD_VOICEINFO16 *vinfo, u8 mainvol) {
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int k;
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s32 volume;
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u8 lvolume, rvolume;
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MIXER_TYPE playpos = vinfo->playpos;
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MIXER_TYPE incval = vinfo->incval;
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MIXER_TYPE loop_end = ((MIXER_TYPE)vinfo->sampleInfo->loop_end) << MIXER_SHIFT;
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MIXER_TYPE loop_start = ((MIXER_TYPE)vinfo->sampleInfo->loop_start) << MIXER_SHIFT;
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BOOL looped = vinfo->sampleInfo->looped;
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BOOL forward = vinfo->forward;
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BOOL pingpong = vinfo->sampleInfo->pingpong;
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s8 * sampledata = vinfo->sampleInfo->sampledata;
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s32 panning;
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int mxamount = nSamples >> 3;
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int mxrest = nSamples & ((1 << 3) - 1);
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if (!vinfo->playing)
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return nSamples;
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volume = ((s32)vinfo->volume * (s32)mainvol * (s32)vinfo->envVolume) >> 12;
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panning = ((s32)(vinfo->panning >> 2) - 32) + ((s32)vinfo->envPanning - 32);
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if (panning > 32)
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panning = 32;
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if (panning < -32)
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panning = -32;
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panning += 32;
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lvolume = (((u32)64 - panning) * volume) >> 6;
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rvolume = (((u32)panning) * volume) >> 6;
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for (k = 0; k < mxamount; k++) {
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s32 value;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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}
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for (k = 0; k < mxrest; k++) {
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s32 value;
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value = ((s32)(s16)((s8*)sampledata)[playpos >> MIXER_SHIFT]) << 8;
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(*(dest++)) += value * lvolume;
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(*(dest++)) += value * rvolume;
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DO_LOOPING;
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}
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vinfo->playpos = playpos;
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vinfo->forward = forward;
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return nSamples;
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}
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/* Mix s16 mono -> s32 stereo, 16.16bit fixed point */
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int mix_s16m_to_s32s_1616bit(s32 *dest, int nSamples, MOD_VOICEINFO16 *vinfo, u8 mainvol) {
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int k;
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s32 volume;
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u8 lvolume, rvolume;
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MIXER_TYPE playpos = vinfo->playpos;
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MIXER_TYPE incval = vinfo->incval;
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MIXER_TYPE loop_end = ((MIXER_TYPE)vinfo->sampleInfo->loop_end) << MIXER_SHIFT;
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MIXER_TYPE loop_start = ((MIXER_TYPE)vinfo->sampleInfo->loop_start) << MIXER_SHIFT;
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BOOL looped = vinfo->sampleInfo->looped;
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BOOL forward = vinfo->forward;
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BOOL pingpong = vinfo->sampleInfo->pingpong;
|
||
|
|
s16 * sampledata = vinfo->sampleInfo->sampledata;
|
||
|
|
|
||
|
|
if (!vinfo->playing)
|
||
|
|
return nSamples;
|
||
|
|
|
||
|
|
volume = ((s32)vinfo->volume * (s32)mainvol * (s32)vinfo->envVolume) >> 12;
|
||
|
|
|
||
|
|
lvolume = (((u32)64-(vinfo->panning >> 2))*volume) >> 6;
|
||
|
|
rvolume = (((u32)(vinfo->panning >> 2))*volume) >> 6;
|
||
|
|
|
||
|
|
for (k = 0; k < nSamples * 2; k += 2) {
|
||
|
|
|
||
|
|
s32 value = (s32)((s16*)sampledata)[playpos >> MIXER_SHIFT];
|
||
|
|
dest[k] += value * lvolume;
|
||
|
|
dest[k + 1] += value * rvolume;
|
||
|
|
DO_LOOPING;
|
||
|
|
}
|
||
|
|
|
||
|
|
vinfo->playpos = playpos;
|
||
|
|
vinfo->forward = forward;
|
||
|
|
|
||
|
|
return nSamples;
|
||
|
|
}
|
||
|
|
|
||
|
|
void clearbuf_s32(s32 *dest, int channels, int nSamples) {
|
||
|
|
|
||
|
|
int k;
|
||
|
|
int mxamount;
|
||
|
|
int mxrest;
|
||
|
|
|
||
|
|
mxamount = (nSamples * channels) >> 3;
|
||
|
|
mxrest = (nSamples * channels) & ((1 << 3) - 1);
|
||
|
|
|
||
|
|
for (k = 0; k < mxamount; k++) {
|
||
|
|
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (k = 0; k < mxrest; k++) {
|
||
|
|
|
||
|
|
(*(dest++)) = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* for (k = 0; k < nSamples * channels; k++)
|
||
|
|
dest[k] = 0;*/
|
||
|
|
}
|
||
|
|
|
||
|
|
void copybuf_s32_to_s16(s16 *dest, s32 *src, int channels, int nSamples) {
|
||
|
|
|
||
|
|
int k;
|
||
|
|
|
||
|
|
for (k = 0; k < nSamples*channels; k++) {
|
||
|
|
|
||
|
|
s32 value = src[k] >> 8;
|
||
|
|
|
||
|
|
if (value < -32768)
|
||
|
|
value = -32768;
|
||
|
|
else if (value > 32767)
|
||
|
|
value = 32767;
|
||
|
|
|
||
|
|
dest[k] = (s16)value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CLIP_S32(a) \
|
||
|
|
if (a < -32768) a = 32768; else if (a > 32767) a = 32767;
|
||
|
|
|
||
|
|
void copybuf_s32_to_u16(u16 *dest, s32 *src, int channels, int nSamples) {
|
||
|
|
|
||
|
|
int k;
|
||
|
|
int mxamount;
|
||
|
|
int mxrest;
|
||
|
|
|
||
|
|
mxamount = (nSamples * channels) >> 3;
|
||
|
|
mxrest = (nSamples * channels) & ((1 << 3) - 1);
|
||
|
|
|
||
|
|
for (k = 0; k < mxamount; k++) {
|
||
|
|
|
||
|
|
s32 value;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (k = 0; k < mxrest; k++) {
|
||
|
|
|
||
|
|
s32 value;
|
||
|
|
|
||
|
|
value = (*(src++)) >> 7;
|
||
|
|
CLIP_S32(value);
|
||
|
|
(*(dest++)) = ((u16)(s16)value) ^ 0x8000;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* for (k=0; k<nSamples*channels; k++)
|
||
|
|
{
|
||
|
|
s32 value = src[k]>>7;
|
||
|
|
if (value<-32768)
|
||
|
|
value = -32768;
|
||
|
|
else
|
||
|
|
if (value>32767)
|
||
|
|
value = 32767;
|
||
|
|
dest[k] = ((u16)(s16)value)^0x8000;
|
||
|
|
}*/
|
||
|
|
}
|
||
|
|
|
||
|
|
void copybuf_s32_to_s8(s8 *dest, s32 *src, int channels, int nSamples) {
|
||
|
|
|
||
|
|
int k;
|
||
|
|
|
||
|
|
for (k = 0; k < nSamples * channels; k++) {
|
||
|
|
|
||
|
|
s32 value = src[k] >> 16;
|
||
|
|
|
||
|
|
if (value < -128)
|
||
|
|
value = -128;
|
||
|
|
else if (value > 127)
|
||
|
|
value = 127;
|
||
|
|
dest[k] = (s8)value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void copybuf_s32_to_u8(u8 *dest, s32 *src, int channels, int nSamples) {
|
||
|
|
|
||
|
|
int k;
|
||
|
|
|
||
|
|
for (k = 0; k < nSamples * channels; k++) {
|
||
|
|
|
||
|
|
s32 value = src[k] >> 16;
|
||
|
|
|
||
|
|
if (value < -128)
|
||
|
|
value = -128;
|
||
|
|
else if (value > 127)
|
||
|
|
value = 127;
|
||
|
|
dest[k] = ((u8)(s8)value) ^ 0x80;
|
||
|
|
}
|
||
|
|
}
|