644 lines
18 KiB
C
644 lines
18 KiB
C
/*
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**********************************************************************
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* cardwo.c - PCM output HAL for emu10k1 driver
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* Copyright 1999, 2000 Creative Labs, Inc.
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*
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**********************************************************************
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*
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* Date Author Summary of changes
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* ---- ------ ------------------
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* October 20, 1999 Bertrand Lee base code release
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*
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**********************************************************************
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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* USA.
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*
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**********************************************************************
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*/
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#include <linux/poll.h>
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#include "hwaccess.h"
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#include "8010.h"
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#include "voicemgr.h"
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#include "cardwo.h"
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#include "audio.h"
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static u32 samplerate_to_linearpitch(u32 samplingrate)
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{
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samplingrate = (samplingrate << 8) / 375;
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return (samplingrate >> 1) + (samplingrate & 1);
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}
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static void query_format(struct emu10k1_wavedevice *wave_dev, struct wave_format *wave_fmt)
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{
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int i, j, do_passthrough = 0, is_ac3 = 0;
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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if ((wave_fmt->channels > 2) && (wave_fmt->id != AFMT_S16_LE) && (wave_fmt->id != AFMT_U8))
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wave_fmt->channels = 2;
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if ((wave_fmt->channels < 1) || (wave_fmt->channels > WAVEOUT_MAXVOICES))
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wave_fmt->channels = 2;
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if (wave_fmt->channels == 2)
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woinst->num_voices = 1;
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else
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woinst->num_voices = wave_fmt->channels;
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if (wave_fmt->samplingrate >= 0x2ee00)
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wave_fmt->samplingrate = 0x2ee00;
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wave_fmt->passthrough = 0;
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do_passthrough = is_ac3 = 0;
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if (card->pt.selected)
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do_passthrough = 1;
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switch (wave_fmt->id) {
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case AFMT_S16_LE:
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wave_fmt->bitsperchannel = 16;
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break;
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case AFMT_U8:
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wave_fmt->bitsperchannel = 8;
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break;
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case AFMT_AC3:
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do_passthrough = 1;
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is_ac3 = 1;
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break;
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default:
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wave_fmt->id = AFMT_S16_LE;
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wave_fmt->bitsperchannel = 16;
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break;
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}
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if (do_passthrough) {
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/* currently only one waveout instance may use pass-through */
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if (woinst->state != WAVE_STATE_CLOSED ||
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card->pt.state != PT_STATE_INACTIVE ||
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(wave_fmt->samplingrate != 48000 && !is_ac3)) {
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DPF(2, "unable to set pass-through mode\n");
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} else if (USE_PT_METHOD1) {
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i = emu10k1_find_control_gpr(&card->mgr, card->pt.patch_name, card->pt.intr_gpr_name);
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j = emu10k1_find_control_gpr(&card->mgr, card->pt.patch_name, card->pt.enable_gpr_name);
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if (i < 0 || j < 0)
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DPF(2, "unable to set pass-through mode\n");
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else {
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wave_fmt->samplingrate = 48000;
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wave_fmt->channels = 2;
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card->pt.pos_gpr = emu10k1_find_control_gpr(&card->mgr, card->pt.patch_name,
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card->pt.pos_gpr_name);
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wave_fmt->passthrough = 1;
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card->pt.intr_gpr = i;
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card->pt.enable_gpr = j;
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card->pt.state = PT_STATE_INACTIVE;
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DPD(2, "is_ac3 is %d\n", is_ac3);
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card->pt.ac3data = is_ac3;
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wave_fmt->bitsperchannel = 16;
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}
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}else{
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DPF(2, "Using Passthrough Method 2\n");
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card->pt.enable_gpr = emu10k1_find_control_gpr(&card->mgr, card->pt.patch_name,
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card->pt.enable_gpr_name);
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wave_fmt->passthrough = 2;
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wave_fmt->bitsperchannel = 16;
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}
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}
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wave_fmt->bytesperchannel = wave_fmt->bitsperchannel >> 3;
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wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel;
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wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate;
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if (wave_fmt->channels == 2)
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wave_fmt->bytespervoicesample = wave_fmt->channels * wave_fmt->bytesperchannel;
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else
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wave_fmt->bytespervoicesample = wave_fmt->bytesperchannel;
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}
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static int get_voice(struct emu10k1_card *card, struct woinst *woinst, unsigned int voicenum)
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{
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struct emu_voice *voice = &woinst->voice[voicenum];
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/* Allocate voices here, if no voices available, return error. */
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voice->usage = VOICE_USAGE_PLAYBACK;
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voice->flags = 0;
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if (woinst->format.channels == 2)
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voice->flags |= VOICE_FLAGS_STEREO;
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if (woinst->format.bitsperchannel == 16)
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voice->flags |= VOICE_FLAGS_16BIT;
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if (emu10k1_voice_alloc(card, voice) < 0) {
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voice->usage = VOICE_USAGE_FREE;
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return -1;
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}
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/* Calculate pitch */
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voice->initial_pitch = (u16) (srToPitch(woinst->format.samplingrate) >> 8);
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voice->pitch_target = samplerate_to_linearpitch(woinst->format.samplingrate);
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DPD(2, "Initial pitch --> %#x\n", voice->initial_pitch);
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voice->startloop = (voice->mem.emupageindex << 12) /
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woinst->format.bytespervoicesample;
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voice->endloop = voice->startloop + woinst->buffer.size / woinst->format.bytespervoicesample;
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voice->start = voice->startloop;
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voice->params[0].volume_target = 0xffff;
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voice->params[0].initial_fc = 0xff;
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voice->params[0].initial_attn = 0x00;
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voice->params[0].byampl_env_sustain = 0x7f;
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voice->params[0].byampl_env_decay = 0x7f;
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if (voice->flags & VOICE_FLAGS_STEREO) {
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if (woinst->format.passthrough == 2) {
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voice->params[0].send_routing = voice->params[1].send_routing = card->waveout.send_routing[ROUTE_PT];
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voice->params[0].send_routing2 = voice->params[1].send_routing2 = card->waveout.send_routing2[ROUTE_PT];
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voice->params[0].send_dcba = 0xff;
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voice->params[1].send_dcba = 0xff00;
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voice->params[0].send_hgfe = voice->params[1].send_hgfe=0;
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} else {
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voice->params[0].send_dcba = card->waveout.send_dcba[SEND_LEFT];
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voice->params[0].send_hgfe = card->waveout.send_hgfe[SEND_LEFT];
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voice->params[1].send_dcba = card->waveout.send_dcba[SEND_RIGHT];
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voice->params[1].send_hgfe = card->waveout.send_hgfe[SEND_RIGHT];
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if (woinst->device) {
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// /dev/dps1
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voice->params[0].send_routing = voice->params[1].send_routing = card->waveout.send_routing[ROUTE_PCM1];
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voice->params[0].send_routing2 = voice->params[1].send_routing2 = card->waveout.send_routing2[ROUTE_PCM1];
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} else {
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voice->params[0].send_routing = voice->params[1].send_routing = card->waveout.send_routing[ROUTE_PCM];
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voice->params[0].send_routing2 = voice->params[1].send_routing2 = card->waveout.send_routing2[ROUTE_PCM];
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}
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}
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voice->params[1].volume_target = 0xffff;
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voice->params[1].initial_fc = 0xff;
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voice->params[1].initial_attn = 0x00;
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voice->params[1].byampl_env_sustain = 0x7f;
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voice->params[1].byampl_env_decay = 0x7f;
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} else {
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if (woinst->num_voices > 1) {
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// Multichannel pcm
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voice->params[0].send_dcba=0xff;
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voice->params[0].send_hgfe=0;
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if (card->is_audigy) {
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voice->params[0].send_routing = 0x3f3f3f00 + card->mchannel_fx + voicenum;
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voice->params[0].send_routing2 = 0x3f3f3f3f;
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} else {
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voice->params[0].send_routing = 0xfff0 + card->mchannel_fx + voicenum;
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}
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} else {
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voice->params[0].send_dcba = card->waveout.send_dcba[SEND_MONO];
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voice->params[0].send_hgfe = card->waveout.send_hgfe[SEND_MONO];
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if (woinst->device) {
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voice->params[0].send_routing = card->waveout.send_routing[ROUTE_PCM1];
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voice->params[0].send_routing2 = card->waveout.send_routing2[ROUTE_PCM1];
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} else {
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voice->params[0].send_routing = card->waveout.send_routing[ROUTE_PCM];
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voice->params[0].send_routing2 = card->waveout.send_routing2[ROUTE_PCM];
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}
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}
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}
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DPD(2, "voice: startloop=%#x, endloop=%#x\n", voice->startloop, voice->endloop);
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emu10k1_voice_playback_setup(voice);
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return 0;
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}
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int emu10k1_waveout_open(struct emu10k1_wavedevice *wave_dev)
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{
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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struct waveout_buffer *buffer = &woinst->buffer;
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unsigned int voicenum;
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u16 delay;
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DPF(2, "emu10k1_waveout_open()\n");
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for (voicenum = 0; voicenum < woinst->num_voices; voicenum++) {
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if (emu10k1_voice_alloc_buffer(card, &woinst->voice[voicenum].mem, woinst->buffer.pages) < 0) {
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ERROR();
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emu10k1_waveout_close(wave_dev);
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return -1;
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}
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if (get_voice(card, woinst, voicenum) < 0) {
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ERROR();
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emu10k1_waveout_close(wave_dev);
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return -1;
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}
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}
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buffer->fill_silence = 0;
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buffer->silence_bytes = 0;
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buffer->silence_pos = 0;
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buffer->hw_pos = 0;
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buffer->free_bytes = woinst->buffer.size;
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delay = (48000 * woinst->buffer.fragment_size) /
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(woinst->format.samplingrate * woinst->format.bytespervoicesample);
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emu10k1_timer_install(card, &woinst->timer, delay);
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woinst->state = WAVE_STATE_OPEN;
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return 0;
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}
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void emu10k1_waveout_close(struct emu10k1_wavedevice *wave_dev)
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{
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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unsigned int voicenum;
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DPF(2, "emu10k1_waveout_close()\n");
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emu10k1_waveout_stop(wave_dev);
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emu10k1_timer_uninstall(card, &woinst->timer);
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for (voicenum = 0; voicenum < woinst->num_voices; voicenum++) {
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emu10k1_voice_free(&woinst->voice[voicenum]);
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emu10k1_voice_free_buffer(card, &woinst->voice[voicenum].mem);
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}
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woinst->state = WAVE_STATE_CLOSED;
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}
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void emu10k1_waveout_start(struct emu10k1_wavedevice *wave_dev)
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{
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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struct pt_data *pt = &card->pt;
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DPF(2, "emu10k1_waveout_start()\n");
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if (woinst->format.passthrough == 2) {
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emu10k1_pt_setup(wave_dev);
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sblive_writeptr(card, (card->is_audigy ? A_GPR_BASE : GPR_BASE) + pt->enable_gpr, 0, 1);
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pt->state = PT_STATE_PLAYING;
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}
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/* Actual start */
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emu10k1_voices_start(woinst->voice, woinst->num_voices, woinst->total_played);
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emu10k1_timer_enable(card, &woinst->timer);
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woinst->state |= WAVE_STATE_STARTED;
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}
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int emu10k1_waveout_setformat(struct emu10k1_wavedevice *wave_dev, struct wave_format *format)
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{
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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unsigned int voicenum;
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u16 delay;
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DPF(2, "emu10k1_waveout_setformat()\n");
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if (woinst->state & WAVE_STATE_STARTED)
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return -1;
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query_format(wave_dev, format);
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if (woinst->format.samplingrate != format->samplingrate ||
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woinst->format.channels != format->channels ||
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woinst->format.bitsperchannel != format->bitsperchannel) {
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woinst->format = *format;
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if (woinst->state == WAVE_STATE_CLOSED)
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return 0;
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emu10k1_timer_uninstall(card, &woinst->timer);
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for (voicenum = 0; voicenum < woinst->num_voices; voicenum++) {
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emu10k1_voice_free(&woinst->voice[voicenum]);
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if (get_voice(card, woinst, voicenum) < 0) {
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ERROR();
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emu10k1_waveout_close(wave_dev);
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return -1;
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}
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}
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delay = (48000 * woinst->buffer.fragment_size) /
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(woinst->format.samplingrate * woinst->format.bytespervoicesample);
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emu10k1_timer_install(card, &woinst->timer, delay);
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}
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return 0;
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}
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void emu10k1_waveout_stop(struct emu10k1_wavedevice *wave_dev)
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{
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struct emu10k1_card *card = wave_dev->card;
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struct woinst *woinst = wave_dev->woinst;
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DPF(2, "emu10k1_waveout_stop()\n");
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if (!(woinst->state & WAVE_STATE_STARTED))
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return;
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emu10k1_timer_disable(card, &woinst->timer);
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/* Stop actual voices */
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emu10k1_voices_stop(woinst->voice, woinst->num_voices);
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emu10k1_waveout_update(woinst);
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woinst->state &= ~WAVE_STATE_STARTED;
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}
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/**
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* emu10k1_waveout_getxfersize -
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*
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* gives the total free bytes on the voice buffer, including silence bytes
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* (basically: total_free_bytes = free_bytes + silence_bytes).
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*
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*/
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void emu10k1_waveout_getxfersize(struct woinst *woinst, u32 *total_free_bytes)
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{
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struct waveout_buffer *buffer = &woinst->buffer;
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int pending_bytes;
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if (woinst->mmapped) {
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*total_free_bytes = buffer->free_bytes;
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return;
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}
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pending_bytes = buffer->size - buffer->free_bytes;
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buffer->fill_silence = (pending_bytes < (signed) buffer->fragment_size * 2) ? 1 : 0;
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if (pending_bytes > (signed) buffer->silence_bytes) {
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*total_free_bytes = (buffer->free_bytes + buffer->silence_bytes);
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} else {
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*total_free_bytes = buffer->size;
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buffer->silence_bytes = pending_bytes;
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if (pending_bytes < 0) {
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buffer->silence_pos = buffer->hw_pos;
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buffer->silence_bytes = 0;
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buffer->free_bytes = buffer->size;
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DPF(1, "buffer underrun\n");
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}
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}
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}
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/**
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* copy_block -
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*
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* copies a block of pcm data to a voice buffer.
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* Notice that the voice buffer is actually a set of disjointed memory pages.
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*
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*/
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static void copy_block(void **dst, u32 str, u8 __user *src, u32 len)
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{
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unsigned int pg;
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unsigned int pgoff;
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unsigned int k;
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pg = str / PAGE_SIZE;
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pgoff = str % PAGE_SIZE;
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if (len > PAGE_SIZE - pgoff) {
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k = PAGE_SIZE - pgoff;
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if (__copy_from_user((u8 *)dst[pg] + pgoff, src, k))
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return;
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len -= k;
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while (len > PAGE_SIZE) {
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if (__copy_from_user(dst[++pg], src + k, PAGE_SIZE))
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return;
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k += PAGE_SIZE;
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len -= PAGE_SIZE;
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}
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if (__copy_from_user(dst[++pg], src + k, len))
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return;
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} else
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__copy_from_user((u8 *)dst[pg] + pgoff, src, len);
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}
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/**
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* copy_ilv_block -
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*
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* copies a block of pcm data containing n interleaved channels to n mono voice buffers.
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* Notice that the voice buffer is actually a set of disjointed memory pages.
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*
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*/
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static void copy_ilv_block(struct woinst *woinst, u32 str, u8 __user *src, u32 len)
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{
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unsigned int pg;
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unsigned int pgoff;
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unsigned int voice_num;
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struct emu_voice *voice = woinst->voice;
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pg = str / PAGE_SIZE;
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pgoff = str % PAGE_SIZE;
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while (len) {
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for (voice_num = 0; voice_num < woinst->num_voices; voice_num++) {
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if (__copy_from_user((u8 *)(voice[voice_num].mem.addr[pg]) + pgoff, src, woinst->format.bytespervoicesample))
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return;
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src += woinst->format.bytespervoicesample;
|
|
}
|
|
|
|
len -= woinst->format.bytespervoicesample;
|
|
|
|
pgoff += woinst->format.bytespervoicesample;
|
|
if (pgoff >= PAGE_SIZE) {
|
|
pgoff = 0;
|
|
pg++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fill_block -
|
|
*
|
|
* fills a set voice buffers with a block of a given sample.
|
|
*
|
|
*/
|
|
static void fill_block(struct woinst *woinst, u32 str, u8 data, u32 len)
|
|
{
|
|
unsigned int pg;
|
|
unsigned int pgoff;
|
|
unsigned int voice_num;
|
|
struct emu_voice *voice = woinst->voice;
|
|
unsigned int k;
|
|
|
|
pg = str / PAGE_SIZE;
|
|
pgoff = str % PAGE_SIZE;
|
|
|
|
if (len > PAGE_SIZE - pgoff) {
|
|
k = PAGE_SIZE - pgoff;
|
|
for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
|
|
memset((u8 *)voice[voice_num].mem.addr[pg] + pgoff, data, k);
|
|
len -= k;
|
|
while (len > PAGE_SIZE) {
|
|
pg++;
|
|
for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
|
|
memset(voice[voice_num].mem.addr[pg], data, PAGE_SIZE);
|
|
|
|
len -= PAGE_SIZE;
|
|
}
|
|
pg++;
|
|
for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
|
|
memset(voice[voice_num].mem.addr[pg], data, len);
|
|
|
|
} else {
|
|
for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
|
|
memset((u8 *)voice[voice_num].mem.addr[pg] + pgoff, data, len);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* emu10k1_waveout_xferdata -
|
|
*
|
|
* copies pcm data to the voice buffer. Silence samples
|
|
* previously added to the buffer are overwritten.
|
|
*
|
|
*/
|
|
void emu10k1_waveout_xferdata(struct woinst *woinst, u8 __user *data, u32 *size)
|
|
{
|
|
struct waveout_buffer *buffer = &woinst->buffer;
|
|
struct voice_mem *mem = &woinst->voice[0].mem;
|
|
u32 sizetocopy, sizetocopy_now, start;
|
|
unsigned long flags;
|
|
|
|
sizetocopy = min_t(u32, buffer->size, *size);
|
|
*size = sizetocopy;
|
|
|
|
if (!sizetocopy)
|
|
return;
|
|
|
|
spin_lock_irqsave(&woinst->lock, flags);
|
|
start = (buffer->size + buffer->silence_pos - buffer->silence_bytes) % buffer->size;
|
|
|
|
if (sizetocopy > buffer->silence_bytes) {
|
|
buffer->silence_pos += sizetocopy - buffer->silence_bytes;
|
|
buffer->free_bytes -= sizetocopy - buffer->silence_bytes;
|
|
buffer->silence_bytes = 0;
|
|
} else
|
|
buffer->silence_bytes -= sizetocopy;
|
|
|
|
spin_unlock_irqrestore(&woinst->lock, flags);
|
|
|
|
sizetocopy_now = buffer->size - start;
|
|
if (sizetocopy > sizetocopy_now) {
|
|
sizetocopy -= sizetocopy_now;
|
|
if (woinst->num_voices > 1) {
|
|
copy_ilv_block(woinst, start, data, sizetocopy_now);
|
|
copy_ilv_block(woinst, 0, data + sizetocopy_now * woinst->num_voices, sizetocopy);
|
|
} else {
|
|
copy_block(mem->addr, start, data, sizetocopy_now);
|
|
copy_block(mem->addr, 0, data + sizetocopy_now, sizetocopy);
|
|
}
|
|
} else {
|
|
if (woinst->num_voices > 1)
|
|
copy_ilv_block(woinst, start, data, sizetocopy);
|
|
else
|
|
copy_block(mem->addr, start, data, sizetocopy);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* emu10k1_waveout_fillsilence -
|
|
*
|
|
* adds samples of silence to the voice buffer so that we
|
|
* don't loop over stale pcm data.
|
|
*
|
|
*/
|
|
void emu10k1_waveout_fillsilence(struct woinst *woinst)
|
|
{
|
|
struct waveout_buffer *buffer = &woinst->buffer;
|
|
u32 sizetocopy, sizetocopy_now, start;
|
|
u8 filldata;
|
|
unsigned long flags;
|
|
|
|
sizetocopy = buffer->fragment_size;
|
|
|
|
if (woinst->format.bitsperchannel == 16)
|
|
filldata = 0x00;
|
|
else
|
|
filldata = 0x80;
|
|
|
|
spin_lock_irqsave(&woinst->lock, flags);
|
|
buffer->silence_bytes += sizetocopy;
|
|
buffer->free_bytes -= sizetocopy;
|
|
buffer->silence_pos %= buffer->size;
|
|
start = buffer->silence_pos;
|
|
buffer->silence_pos += sizetocopy;
|
|
spin_unlock_irqrestore(&woinst->lock, flags);
|
|
|
|
sizetocopy_now = buffer->size - start;
|
|
|
|
if (sizetocopy > sizetocopy_now) {
|
|
sizetocopy -= sizetocopy_now;
|
|
fill_block(woinst, start, filldata, sizetocopy_now);
|
|
fill_block(woinst, 0, filldata, sizetocopy);
|
|
} else {
|
|
fill_block(woinst, start, filldata, sizetocopy);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* emu10k1_waveout_update -
|
|
*
|
|
* updates the position of the voice buffer hardware pointer (hw_pos)
|
|
* and the number of free bytes on the buffer (free_bytes).
|
|
* The free bytes _don't_ include silence bytes that may have been
|
|
* added to the buffer.
|
|
*
|
|
*/
|
|
void emu10k1_waveout_update(struct woinst *woinst)
|
|
{
|
|
u32 hw_pos;
|
|
u32 diff;
|
|
|
|
/* There is no actual start yet */
|
|
if (!(woinst->state & WAVE_STATE_STARTED)) {
|
|
hw_pos = woinst->buffer.hw_pos;
|
|
} else {
|
|
/* hw_pos in sample units */
|
|
hw_pos = sblive_readptr(woinst->voice[0].card, CCCA_CURRADDR, woinst->voice[0].num);
|
|
|
|
if(hw_pos < woinst->voice[0].start)
|
|
hw_pos += woinst->buffer.size / woinst->format.bytespervoicesample - woinst->voice[0].start;
|
|
else
|
|
hw_pos -= woinst->voice[0].start;
|
|
|
|
hw_pos *= woinst->format.bytespervoicesample;
|
|
}
|
|
|
|
diff = (woinst->buffer.size + hw_pos - woinst->buffer.hw_pos) % woinst->buffer.size;
|
|
woinst->total_played += diff;
|
|
woinst->buffer.free_bytes += diff;
|
|
woinst->buffer.hw_pos = hw_pos;
|
|
}
|