/*
 * ES1370 Haiku Driver for ES1370 audio
 *
 * Copyright 2002-2007, Haiku, Inc.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Jerome Duval, jerome.duval@free.fr
 */

#include <driver_settings.h>
#include <OS.h>
#include <MediaDefs.h>
#include <string.h>
#include <strings.h>

#include <kernel.h>

#include "hmulti_audio.h"
#include "multi.h"

//#define DEBUG 1

#include "debug.h"
#include "es1370.h"
#include "util.h"
#include "io.h"

#if 0
static void     
es1370_ac97_get_mix(void *card, const void *cookie, int32 type, float *values) {
        es1370_dev *dev = (es1370_dev*)card;
        ac97_source_info *info = (ac97_source_info *)cookie;
        uint16 value, mask;
        float gain;
        
        switch(type) {
                case B_MIX_GAIN:
                        value = es1370_codec_read(&dev->config, info->reg);
                        //PRINT(("B_MIX_GAIN value : %u\n", value));
                        if (info->type & B_MIX_STEREO) {
                                mask = ((1 << (info->bits + 1)) - 1) << 8;
                                gain = ((value & mask) >> 8) * info->granularity;
                                if (info->polarity == 1)
                                        values[0] = info->max_gain - gain;
                                else
                                        values[0] = gain - info->min_gain;
                                
                                mask = ((1 << (info->bits + 1)) - 1);
                                gain = (value & mask) * info->granularity;
                                if (info->polarity == 1)
                                        values[1] = info->max_gain - gain;
                                else
                                        values[1] = gain - info->min_gain;
                        } else {
                                mask = ((1 << (info->bits + 1)) - 1);
                                gain = (value & mask) * info->granularity;
                                if (info->polarity == 1)
                                        values[0] = info->max_gain - gain;
                                else
                                        values[0] = gain - info->min_gain;
                        }
                        break;
                case B_MIX_MUTE:
                        mask = ((1 << 1) - 1) << 15;
                        value = es1370_codec_read(&dev->config, info->reg);
                        //PRINT(("B_MIX_MUTE value : %u\n", value));
                        value &= mask;
                        values[0] = ((value >> 15) == 1) ? 1.0 : 0.0;
                        break;
                case B_MIX_MICBOOST:
                        mask = ((1 << 1) - 1) << 6;
                        value = es1370_codec_read(&dev->config, info->reg);
                        //PRINT(("B_MIX_MICBOOST value : %u\n", value));
                        value &= mask;
                        values[0] = ((value >> 6) == 1) ? 1.0 : 0.0;
                        break;
                case B_MIX_MUX:
                        mask = ((1 << 3) - 1);
                        value = es1370_codec_read(&dev->config, AC97_RECORD_SELECT);
                        value &= mask;
                        //PRINT(("B_MIX_MUX value : %u\n", value));
                        values[0] = (float)value;
                        break;
        }
}

static void     
es1370_ac97_set_mix(void *card, const void *cookie, int32 type, float *values) {
        es1370_dev *dev = (es1370_dev*)card;
        ac97_source_info *info = (ac97_source_info *)cookie;
        uint16 value, mask;
        float gain;
        
        switch(type) {
                case B_MIX_GAIN:
                        value = es1370_codec_read(&dev->config, info->reg);
                        if (info->type & B_MIX_STEREO) {
                                mask = ((1 << (info->bits + 1)) - 1) << 8;
                                value &= ~mask;
                                
                                if (info->polarity == 1)
                                        gain = info->max_gain - values[0];
                                else
                                        gain =  values[0] - info->min_gain;
                                value |= ((uint16)(gain / info->granularity) << 8) & mask;
                                
                                mask = ((1 << (info->bits + 1)) - 1);
                                value &= ~mask;
                                if (info->polarity == 1)
                                        gain = info->max_gain - values[1];
                                else
                                        gain =  values[1] - info->min_gain;
                                value |= ((uint16)(gain / info->granularity)) & mask;
                        } else {
                                mask = ((1 << (info->bits + 1)) - 1);
                                value &= ~mask;
                                if (info->polarity == 1)
                                        gain = info->max_gain - values[0];
                                else
                                        gain =  values[0] - info->min_gain;
                                value |= ((uint16)(gain / info->granularity)) & mask;
                        }
                        //PRINT(("B_MIX_GAIN value : %u\n", value));
                        es1370_codec_write(&dev->config, info->reg, value);
                        break;
                case B_MIX_MUTE:
                        mask = ((1 << 1) - 1) << 15;
                        value = es1370_codec_read(&dev->config, info->reg);
                        value &= ~mask;
                        value |= ((values[0] == 1.0 ? 1 : 0 ) << 15 & mask);
                        if (info->reg == AC97_SURR_VOLUME) {
                                // there is a independent mute for each channel
                                mask = ((1 << 1) - 1) << 7;
                                value &= ~mask;
                                value |= ((values[0] == 1.0 ? 1 : 0 ) << 7 & mask);
                        }
                        //PRINT(("B_MIX_MUTE value : %u\n", value));
                        es1370_codec_write(&dev->config, info->reg, value);
                        break;
                case B_MIX_MICBOOST:
                        mask = ((1 << 1) - 1) << 6;
                        value = es1370_codec_read(&dev->config, info->reg);
                        value &= ~mask;
                        value |= ((values[0] == 1.0 ? 1 : 0 ) << 6 & mask);
                        //PRINT(("B_MIX_MICBOOST value : %u\n", value));
                        es1370_codec_write(&dev->config, info->reg, value);
                        break;
                case B_MIX_MUX:
                        mask = ((1 << 3) - 1);
                        value = ((int32)values[0]) & mask;
                        value = value | (value << 8);
                        //PRINT(("B_MIX_MUX value : %u\n", value));
                        es1370_codec_write(&dev->config, AC97_RECORD_SELECT, value);
                        break;
        }

}


static int32
es1370_create_group_control(multi_dev *multi, int32 *index, int32 parent, 
        int32 string, const char* name) {
        int32 i = *index;
        (*index)++;
        multi->controls[i].mix_control.id = EMU_MULTI_CONTROL_FIRSTID + i;
        multi->controls[i].mix_control.parent = parent;
        multi->controls[i].mix_control.flags = B_MULTI_MIX_GROUP;
        multi->controls[i].mix_control.master = EMU_MULTI_CONTROL_MASTERID;
        multi->controls[i].mix_control.string = string;
        if (name)
                strcpy(multi->controls[i].mix_control.name, name);
                
        return multi->controls[i].mix_control.id;
}
#endif


static status_t
es1370_create_controls_list(multi_dev *multi)
{
        multi->control_count = 0;
        PRINT(("multi->control_count %" B_PRIu32 "\n", multi->control_count));
        return B_OK;
}


static status_t 
es1370_get_mix(es1370_dev *card, multi_mix_value_info * mmvi)
{
        int32 i, id;
        multi_mixer_control *control = NULL;
        for (i = 0; i < mmvi->item_count; i++) {
                id = mmvi->values[i].id - EMU_MULTI_CONTROL_FIRSTID;
                if (id < 0 || (uint32)id >= card->multi.control_count) {
                        PRINT(("es1370_get_mix : invalid control id requested : %" B_PRId32
                                "\n", id));
                        continue;
                }
                control = &card->multi.controls[id];
        
                if (control->mix_control.flags & B_MULTI_MIX_GAIN) {
                        if (control->get) {
                                float values[2];
                                control->get(card, control->cookie, control->type, values);
                                if (control->mix_control.master == EMU_MULTI_CONTROL_MASTERID)
                                        mmvi->values[i].u.gain = values[0];
                                else
                                        mmvi->values[i].u.gain = values[1];
                        }                       
                }
                
                if (control->mix_control.flags & B_MULTI_MIX_ENABLE && control->get) {
                        float values[1];
                        control->get(card, control->cookie, control->type, values);
                        mmvi->values[i].u.enable = (values[0] == 1.0);
                }
                
                if (control->mix_control.flags & B_MULTI_MIX_MUX && control->get) {
                        float values[1];
                        control->get(card, control->cookie, control->type, values);
                        mmvi->values[i].u.mux = (int32)values[0];
                }
        }
        return B_OK;
}

static status_t 
es1370_set_mix(es1370_dev *card, multi_mix_value_info * mmvi)
{
        int32 i, id;
        multi_mixer_control *control = NULL;
        for (i = 0; i < mmvi->item_count; i++) {
                id = mmvi->values[i].id - EMU_MULTI_CONTROL_FIRSTID;
                if (id < 0 || (uint32)id >= card->multi.control_count) {
                        PRINT(("es1370_set_mix : invalid control id requested : %" B_PRId32
                                "\n", id));
                        continue;
                }
                control = &card->multi.controls[id];
                                        
                if (control->mix_control.flags & B_MULTI_MIX_GAIN) {
                        multi_mixer_control *control2 = NULL;
                        if (i+1<mmvi->item_count) {
                                id = mmvi->values[i + 1].id - EMU_MULTI_CONTROL_FIRSTID;
                                if (id < 0 || (uint32)id >= card->multi.control_count) {
                                        PRINT(("es1370_set_mix : invalid control id requested : %"
                                                B_PRId32 "\n", id));
                                } else {
                                        control2 = &card->multi.controls[id];
                                        if (control2->mix_control.master != control->mix_control.id)
                                                control2 = NULL;
                                }
                        }

                        if (control->set) {
                                float values[2];
                                values[0] = 0.0;
                                values[1] = 0.0;

                                if (control->mix_control.master == EMU_MULTI_CONTROL_MASTERID)
                                        values[0] = mmvi->values[i].u.gain;
                                else
                                        values[1] = mmvi->values[i].u.gain;
                                        
                                if (control2 && control2->mix_control.master != EMU_MULTI_CONTROL_MASTERID)
                                        values[1] = mmvi->values[i+1].u.gain;
                                        
                                control->set(card, control->cookie, control->type, values);
                        }
                        
                        if (control2)
                                i++;            
                }
        
                if (control->mix_control.flags & B_MULTI_MIX_ENABLE && control->set) {
                        float values[1];
                        
                        values[0] = mmvi->values[i].u.enable ? 1.0 : 0.0;
                        control->set(card, control->cookie, control->type, values);
                }
                
                if (control->mix_control.flags & B_MULTI_MIX_MUX && control->set) {
                        float values[1];
                        
                        values[0] = (float)mmvi->values[i].u.mux;
                        control->set(card, control->cookie, control->type, values);
                }
        }
        return B_OK;
}

static status_t 
es1370_list_mix_controls(es1370_dev *card, multi_mix_control_info * mmci)
{
        multi_mix_control       *mmc;
        uint32 i;

        mmc = mmci->controls;
        if (mmci->control_count < 24)
                return B_ERROR;
                        
        if (es1370_create_controls_list(&card->multi) < B_OK)
                return B_ERROR;
        for (i = 0; i < card->multi.control_count; i++) {
                mmc[i] = card->multi.controls[i].mix_control;
        }
        
        mmci->control_count = card->multi.control_count;        
        return B_OK;
}

static status_t 
es1370_list_mix_connections(es1370_dev *card, multi_mix_connection_info * data)
{
        return B_ERROR;
}

static status_t 
es1370_list_mix_channels(es1370_dev *card, multi_mix_channel_info *data)
{
        return B_ERROR;
}

/*multi_channel_info chans[] = {
{  0, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  1, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  2, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  3, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  4, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  5, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  6, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  7, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  8, B_MULTI_OUTPUT_BUS,               B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS,  B_CHANNEL_MINI_JACK_STEREO },
{  9, B_MULTI_OUTPUT_BUS,               B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, B_CHANNEL_MINI_JACK_STEREO },
{  10, B_MULTI_INPUT_BUS,               B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS,  B_CHANNEL_MINI_JACK_STEREO },
{  11, B_MULTI_INPUT_BUS,               B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, B_CHANNEL_MINI_JACK_STEREO },
};*/

/*multi_channel_info chans[] = {
{  0, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  1, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  2, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_LEFT | B_CHANNEL_SURROUND_BUS, 0 },
{  3, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_RIGHT | B_CHANNEL_SURROUND_BUS, 0 },
{  4, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_REARLEFT | B_CHANNEL_SURROUND_BUS, 0 },
{  5, B_MULTI_OUTPUT_CHANNEL,   B_CHANNEL_REARRIGHT | B_CHANNEL_SURROUND_BUS, 0 },
{  6, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  7, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  8, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS, 0 },
{  9, B_MULTI_INPUT_CHANNEL,    B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, 0 },
{  10, B_MULTI_OUTPUT_BUS,              B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS,  B_CHANNEL_MINI_JACK_STEREO },
{  11, B_MULTI_OUTPUT_BUS,              B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, B_CHANNEL_MINI_JACK_STEREO },
{  12, B_MULTI_INPUT_BUS,               B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS,  B_CHANNEL_MINI_JACK_STEREO },
{  13, B_MULTI_INPUT_BUS,               B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS, B_CHANNEL_MINI_JACK_STEREO },
};*/


static void
es1370_create_channels_list(multi_dev *multi)
{
        es1370_stream *stream;
        uint32 index, i, mode, designations;
        multi_channel_info *chans;
        uint32 chan_designations[] = {
                B_CHANNEL_LEFT,
                B_CHANNEL_RIGHT,
                B_CHANNEL_REARLEFT,
                B_CHANNEL_REARRIGHT,
                B_CHANNEL_CENTER,
                B_CHANNEL_SUB
        };

        chans = multi->chans;
        index = 0;

        for (mode = ES1370_USE_PLAY; (int32)mode != -1;
                mode = (mode == ES1370_USE_PLAY) ? ES1370_USE_RECORD : -1) {
                LIST_FOREACH(stream, &((es1370_dev*)multi->card)->streams, next) {
                        if ((stream->use & mode) == 0)
                                continue;
                                
                        if (stream->channels == 2)
                                designations = B_CHANNEL_STEREO_BUS;
                        else
                                designations = B_CHANNEL_SURROUND_BUS;
                        
                        for (i = 0; i < stream->channels; i++) {
                                chans[index].channel_id = index;
                                chans[index].kind = (mode == ES1370_USE_PLAY) ? B_MULTI_OUTPUT_CHANNEL : B_MULTI_INPUT_CHANNEL;
                                chans[index].designations = designations | chan_designations[i];
                                chans[index].connectors = 0;
                                index++;
                        }
                }
                
                if (mode==ES1370_USE_PLAY) {
                        multi->output_channel_count = index;
                } else {
                        multi->input_channel_count = index - multi->output_channel_count;
                }
        }

        chans[index].channel_id = index;

        chans[index].kind = B_MULTI_OUTPUT_BUS;
        chans[index].designations = B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS;
        chans[index].connectors = B_CHANNEL_MINI_JACK_STEREO;
        index++;

        chans[index].channel_id = index;
        chans[index].kind = B_MULTI_OUTPUT_BUS;
        chans[index].designations = B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS;
        chans[index].connectors = B_CHANNEL_MINI_JACK_STEREO;
        index++;

        multi->output_bus_channel_count = index - multi->output_channel_count 
                - multi->input_channel_count;

        chans[index].channel_id = index;
        chans[index].kind = B_MULTI_INPUT_BUS;
        chans[index].designations = B_CHANNEL_LEFT | B_CHANNEL_STEREO_BUS;
        chans[index].connectors = B_CHANNEL_MINI_JACK_STEREO;
        index++;

        chans[index].channel_id = index;
        chans[index].kind = B_MULTI_INPUT_BUS;
        chans[index].designations = B_CHANNEL_RIGHT | B_CHANNEL_STEREO_BUS;
        chans[index].connectors = B_CHANNEL_MINI_JACK_STEREO;
        index++;

        multi->input_bus_channel_count = index - multi->output_channel_count 
                - multi->input_channel_count - multi->output_bus_channel_count;

        multi->aux_bus_channel_count = 0;
}


static status_t 
es1370_get_description(es1370_dev *card, multi_description *data)
{
        uint32 size;

        data->interface_version = B_CURRENT_INTERFACE_VERSION;
        data->interface_minimum = B_CURRENT_INTERFACE_VERSION;

        strncpy(data->friendly_name, FRIENDLY_NAME, 32);
        strcpy(data->vendor_info, AUTHOR);

        data->output_channel_count = card->multi.output_channel_count;
        data->input_channel_count = card->multi.input_channel_count;
        data->output_bus_channel_count = card->multi.output_bus_channel_count;
        data->input_bus_channel_count = card->multi.input_bus_channel_count;
        data->aux_bus_channel_count = card->multi.aux_bus_channel_count;
        
        size = card->multi.output_channel_count + card->multi.input_channel_count
                        + card->multi.output_bus_channel_count + card->multi.input_bus_channel_count
                        + card->multi.aux_bus_channel_count;
                        
        // for each channel, starting with the first output channel, 
        // then the second, third..., followed by the first input 
        // channel, second, third, ..., followed by output bus
        // channels and input bus channels and finally auxillary channels, 

        LOG(("request_channel_count = %" B_PRId32 "\n",
                data->request_channel_count));
        if (data->request_channel_count >= (int32)size) {
                LOG(("copying data\n"));
                memcpy(data->channels, card->multi.chans, size * sizeof(card->multi.chans[0]));
        }

        data->output_rates = B_SR_44100;// | B_SR_48000 | B_SR_CVSR;
        data->input_rates = B_SR_44100;// | B_SR_48000 | B_SR_CVSR;
        data->output_rates = B_SR_44100;
        data->input_rates = B_SR_44100;
        data->min_cvsr_rate = 0;
        data->max_cvsr_rate = 44100;

        data->output_formats = B_FMT_16BIT;
        data->input_formats = B_FMT_16BIT;
        data->lock_sources = B_MULTI_LOCK_INTERNAL;
        data->timecode_sources = 0;
        data->interface_flags = B_MULTI_INTERFACE_PLAYBACK | B_MULTI_INTERFACE_RECORD;
        data->start_latency = 3000;

        strcpy(data->control_panel,"");

        return B_OK;
}


static status_t 
es1370_get_enabled_channels(es1370_dev *card, multi_channel_enable *data)
{
        B_SET_CHANNEL(data->enable_bits, 0, true);
        B_SET_CHANNEL(data->enable_bits, 1, true);
        B_SET_CHANNEL(data->enable_bits, 2, true);
        B_SET_CHANNEL(data->enable_bits, 3, true);
        data->lock_source = B_MULTI_LOCK_INTERNAL;
/*
        uint32                  lock_source;
        int32                   lock_data;
        uint32                  timecode_source;
        uint32 *                connectors;
*/
        return B_OK;
}


#if 0
static status_t 
es1370_set_enabled_channels(es1370_dev *card, multi_channel_enable *data)
{
        PRINT(("set_enabled_channels 0 : %s\n", B_TEST_CHANNEL(data->enable_bits, 0) ? "enabled": "disabled"));
        PRINT(("set_enabled_channels 1 : %s\n", B_TEST_CHANNEL(data->enable_bits, 1) ? "enabled": "disabled"));
        PRINT(("set_enabled_channels 2 : %s\n", B_TEST_CHANNEL(data->enable_bits, 2) ? "enabled": "disabled"));
        PRINT(("set_enabled_channels 3 : %s\n", B_TEST_CHANNEL(data->enable_bits, 3) ? "enabled": "disabled"));
        return B_OK;
}
#endif


static status_t
es1370_get_global_format(es1370_dev *card, multi_format_info *data)
{
        data->output_latency = 0;
        data->input_latency = 0;
        data->timecode_kind = 0;
        data->input.rate = B_SR_44100;
        data->input.cvsr = 44100;
        data->input.format = B_FMT_16BIT;
        data->output.rate = B_SR_44100;
        data->output.cvsr = 44100;
        data->output.format = B_FMT_16BIT;
        return B_OK;
}


static status_t
es1370_set_global_format(es1370_dev *card, multi_format_info *data)
{
        /* XXX BUG! we *MUST* return B_OK, returning B_ERROR will prevent
         * BeOS to accept the format returned in B_MULTI_GET_GLOBAL_FORMAT
         */
        return B_OK;
}


static status_t 
es1370_get_buffers(es1370_dev *card, multi_buffer_list *data)
{
        uint8 i, j, pchannels, rchannels, bufcount;
        
        LOG(("flags = %#" B_PRIx32 "\n",data->flags));
        LOG(("request_playback_buffers = %" B_PRId32 "\n",
                data->request_playback_buffers));
        LOG(("request_playback_channels = %" B_PRId32 "\n",
                data->request_playback_channels));
        LOG(("request_playback_buffer_size = %#" B_PRIx32 "\n",
                data->request_playback_buffer_size));
        LOG(("request_record_buffers = %" B_PRId32 "\n",
                data->request_record_buffers));
        LOG(("request_record_channels = %" B_PRId32 "\n",
                data->request_record_channels));
        LOG(("request_record_buffer_size = %#" B_PRIx32 "\n",
                data->request_record_buffer_size));
        
        pchannels = card->pstream->channels;
        rchannels = card->rstream->channels;
        
        if (data->request_playback_buffers < current_settings.buffer_count ||
                data->request_playback_channels < (pchannels) ||
                data->request_record_buffers < current_settings.buffer_count ||
                data->request_record_channels < (rchannels)) {
                LOG(("not enough channels/buffers\n"));
        }

        data->flags = B_MULTI_BUFFER_PLAYBACK | B_MULTI_BUFFER_RECORD; // XXX ???
//      data->flags = 0;
                
        data->return_playback_buffers = current_settings.buffer_count;  /* playback_buffers[b][] */
        data->return_playback_channels = pchannels;             /* playback_buffers[][c] */
        data->return_playback_buffer_size = current_settings.buffer_frames;             /* frames */

        bufcount = current_settings.buffer_count;
        if (bufcount > data->request_playback_buffers)
                bufcount = data->request_playback_buffers;

        for (i = 0; i < bufcount; i++) {
                struct buffer_desc descs[data->return_playback_channels];
                for (j=0; j<pchannels; j++)
                        es1370_stream_get_nth_buffer(card->pstream, j, i, 
                                &descs[j].base,
                                &descs[j].stride);
                if (!IS_USER_ADDRESS(data->playback_buffers[i])
                        || user_memcpy(data->playback_buffers[i], descs, sizeof(descs))
                        < B_OK) {
                        return B_BAD_ADDRESS;
                }
        }
                                        
        data->return_record_buffers = current_settings.buffer_count;
        data->return_record_channels = rchannels;
        data->return_record_buffer_size = current_settings.buffer_frames;       /* frames */
        
        bufcount = current_settings.buffer_count;
        if (bufcount > data->request_record_buffers)
                bufcount = data->request_record_buffers;

        for (i = 0; i < bufcount; i++) {
                struct buffer_desc descs[data->return_record_channels];
                for (j=0; j<rchannels; j++)
                        es1370_stream_get_nth_buffer(card->rstream, j, i, 
                                &descs[j].base,
                                &descs[j].stride);
                if (!IS_USER_ADDRESS(data->record_buffers[i])
                        || user_memcpy(data->record_buffers[i], descs, sizeof(descs))
                        < B_OK) {
                        return B_BAD_ADDRESS;
                }
        }
                
        return B_OK;
}


static void
es1370_play_inth(void* inthparams)
{
        es1370_stream *stream = (es1370_stream *)inthparams;
        //int32 count;
        
        acquire_spinlock(&slock);
        stream->real_time = system_time();
        stream->frames_count += current_settings.buffer_frames;
        stream->buffer_cycle = (stream->trigblk 
                + stream->blkmod - 1) % stream->blkmod;
        stream->update_needed = true;
        release_spinlock(&slock);
        
        //TRACE(("es1370_play_inth : cycle : %d\n", stream->buffer_cycle));
                        
        release_sem_etc(stream->card->buffer_ready_sem, 1, B_DO_NOT_RESCHEDULE);
}

static void
es1370_record_inth(void* inthparams)
{
        es1370_stream *stream = (es1370_stream *)inthparams;
        //int32 count;
        
        acquire_spinlock(&slock);
        stream->real_time = system_time();
        stream->frames_count += current_settings.buffer_frames;
        stream->buffer_cycle = (stream->trigblk 
                + stream->blkmod - 1) % stream->blkmod;
        stream->update_needed = true;
        release_spinlock(&slock);
        
        //TRACE(("es1370_record_inth : cycle : %d\n", stream->buffer_cycle));
                                
        release_sem_etc(stream->card->buffer_ready_sem, 1, B_DO_NOT_RESCHEDULE);
}

static status_t 
es1370_buffer_exchange(es1370_dev *card, multi_buffer_info *data)
{
        cpu_status status;
        es1370_stream *pstream, *rstream;
        multi_buffer_info buffer_info;

#ifdef __HAIKU__
        if (user_memcpy(&buffer_info, data, sizeof(buffer_info)) < B_OK)
                return B_BAD_ADDRESS;
#else
        memcpy(&buffer_info, data, sizeof(buffer_info));
#endif

        buffer_info.flags = B_MULTI_BUFFER_PLAYBACK | B_MULTI_BUFFER_RECORD;
        
        if (!(card->pstream->state & ES1370_STATE_STARTED))
                es1370_stream_start(card->pstream, es1370_play_inth, card->pstream);
        
        if (!(card->rstream->state & ES1370_STATE_STARTED))
                es1370_stream_start(card->rstream, es1370_record_inth, card->rstream);
        
        if (acquire_sem_etc(card->buffer_ready_sem, 1, B_RELATIVE_TIMEOUT | B_CAN_INTERRUPT, 100000)
                == B_TIMED_OUT) {
                LOG(("buffer_exchange timeout ff\n"));
        }
        
        status = lock();
        
        LIST_FOREACH(pstream, &card->streams, next) {
                if ((pstream->use & ES1370_USE_PLAY) == 0 || 
                        (pstream->state & ES1370_STATE_STARTED) == 0)
                        continue;
                if (pstream->update_needed)     
                        break;
        }
        
        LIST_FOREACH(rstream, &card->streams, next) {
                if ((rstream->use & ES1370_USE_RECORD) == 0 ||
                        (rstream->state & ES1370_STATE_STARTED) == 0)
                        continue;
                if (rstream->update_needed)     
                        break;
        }
        
        if (!pstream)
                pstream = card->pstream;
        if (!rstream)
                rstream = card->rstream;
        
        /* do playback */
        buffer_info.playback_buffer_cycle = pstream->buffer_cycle;
        buffer_info.played_real_time = pstream->real_time;
        buffer_info.played_frames_count = pstream->frames_count;
        buffer_info._reserved_0 = pstream->first_channel;
        pstream->update_needed = false;
        
        /* do record */
        buffer_info.record_buffer_cycle = rstream->buffer_cycle;
        buffer_info.recorded_frames_count = rstream->frames_count;
        buffer_info.recorded_real_time = rstream->real_time;
        buffer_info._reserved_1 = rstream->first_channel;
        rstream->update_needed = false;
        unlock(status);
        
#ifdef __HAIKU__
        if (user_memcpy(data, &buffer_info, sizeof(buffer_info)) < B_OK)
                return B_BAD_ADDRESS;
#else
        memcpy(data, &buffer_info, sizeof(buffer_info));
#endif

        //TRACE(("buffer_exchange ended\n"));
        return B_OK;
}

static status_t 
es1370_buffer_force_stop(es1370_dev *card)
{
        //es1370_voice_halt(card->pvoice);
        return B_OK;
}

#define cookie_type es1370_dev
#define get_description es1370_get_description
#define get_enabled_channels es1370_get_enabled_channels
#define get_global_format es1370_get_global_format
#define set_global_format es1370_set_global_format
#define list_mix_channels es1370_list_mix_channels
#define list_mix_controls es1370_list_mix_controls
#define list_mix_connections es1370_list_mix_connections
#define get_mix es1370_get_mix
#define set_mix es1370_set_mix
#define get_buffers es1370_get_buffers
#define buffer_exchange es1370_buffer_exchange
#define buffer_force_stop es1370_buffer_force_stop
#include "../generic/multi.c"

static status_t 
es1370_multi_control(void *cookie, uint32 op, void *data, size_t length)
{
        es1370_dev *card = (es1370_dev *)cookie;

        return multi_audio_control_generic(card, op, data, length);
}

static status_t es1370_open(const char *name, uint32 flags, void** cookie);
static status_t es1370_close(void* cookie);
static status_t es1370_free(void* cookie);
static status_t es1370_control(void* cookie, uint32 op, void* arg, size_t len);
static status_t es1370_read(void* cookie, off_t position, void *buf, size_t* num_bytes);
static status_t es1370_write(void* cookie, off_t position, const void* buffer, size_t* num_bytes);

device_hooks multi_hooks = {
        es1370_open,                    /* -> open entry point */
        es1370_close,                   /* -> close entry point */
        es1370_free,                    /* -> free cookie */
        es1370_control,                 /* -> control entry point */
        es1370_read,                    /* -> read entry point */
        es1370_write,                   /* -> write entry point */
        NULL,                                   /* start select */
        NULL,                                   /* stop select */
        NULL,                                   /* scatter-gather read from the device */
        NULL                                    /* scatter-gather write to the device */
};

static status_t
es1370_open(const char *name, uint32 flags, void** cookie)
{
        es1370_dev *card = NULL;
        void *settings_handle;
        int ix;
        
        LOG(("open()\n"));
        
        for (ix=0; ix<num_cards; ix++) {
                if (!strcmp(cards[ix].name, name)) {
                        card = &cards[ix];
                }
        }
        
        if (card == NULL) {
                LOG(("open() card not found %s\n", name));
                for (ix=0; ix<num_cards; ix++) {
                        LOG(("open() card available %s\n", cards[ix].name)); 
                }
                return B_ERROR;
        }
                
        LOG(("open() got card\n"));
        
        if (card->pstream !=NULL)
                return B_ERROR;
        if (card->rstream !=NULL)
                return B_ERROR;
                        
        *cookie = card;
        card->multi.card = card;
                
        // get driver settings
        settings_handle = load_driver_settings(ES1370_SETTINGS);
        if (settings_handle != NULL) {
                const char *item;
                char       *end;
                uint32      value;

                item = get_driver_parameter (settings_handle, "sample_rate", "44100", "44100");
                value = strtoul (item, &end, 0);
                if (*end == '\0') 
                        current_settings.sample_rate = value;

                item = get_driver_parameter (settings_handle, "buffer_frames", "512", "512");
                value = strtoul (item, &end, 0);
                if (*end == '\0') 
                        current_settings.buffer_frames = value;

                item = get_driver_parameter (settings_handle, "buffer_count", "2", "2");
                value = strtoul (item, &end, 0);
                if (*end == '\0') 
                        current_settings.buffer_count = value;

                unload_driver_settings(settings_handle);
        }

        LOG(("stream_new\n"));
                
        card->rstream = es1370_stream_new(card, ES1370_USE_RECORD, current_settings.buffer_frames, current_settings.buffer_count);
        card->pstream = es1370_stream_new(card, ES1370_USE_PLAY, current_settings.buffer_frames, current_settings.buffer_count);
        
        card->buffer_ready_sem = create_sem(0, "pbuffer ready");
                
        LOG(("stream_setaudio\n"));
        
        es1370_stream_set_audioparms(card->pstream, 2, true, current_settings.sample_rate);
        es1370_stream_set_audioparms(card->rstream, 2, true, current_settings.sample_rate);
                
        card->pstream->first_channel = 0;
        card->rstream->first_channel = 2;
        
        es1370_stream_commit_parms(card->pstream);
        es1370_stream_commit_parms(card->rstream);
        
        es1370_create_channels_list(&card->multi);
                
        return B_OK;
}

static status_t
es1370_close(void* cookie)
{
        //es1370_dev *card = cookie;
        LOG(("close()\n"));
                
        return B_OK;
}

static status_t
es1370_free(void* cookie)
{
        es1370_dev *card = cookie;
        es1370_stream *stream;
        LOG(("free()\n"));
                
        if (card->buffer_ready_sem > B_OK)
                delete_sem(card->buffer_ready_sem);
                        
        LIST_FOREACH(stream, &card->streams, next) {
                es1370_stream_halt(stream);
        }
        
        while (!LIST_EMPTY(&card->streams)) {
                es1370_stream_delete(LIST_FIRST(&card->streams));
        }

        card->pstream = NULL;
        card->rstream = NULL;
        
        return B_OK;
}

static status_t
es1370_control(void* cookie, uint32 op, void* arg, size_t len)
{
        return es1370_multi_control(cookie, op, arg, len);
}

static status_t
es1370_read(void* cookie, off_t position, void *buf, size_t* num_bytes)
{
        *num_bytes = 0;                         /* tell caller nothing was read */
        return B_IO_ERROR;
}

static status_t
es1370_write(void* cookie, off_t position, const void* buffer, size_t* num_bytes)
{
        *num_bytes = 0;                         /* tell caller nothing was written */
        return B_IO_ERROR;
}