/*
 * This file is a part of BeOS USBVision driver project.
 * Copyright (c) 2003 by Siarzuk Zharski <imker@gmx.li>
 *
 * This file may be used under the terms of the BSD License
 *
 * Skeletal part of this code was inherired from original BeOS sample code,
 * that is distributed under the terms of the Be Sample Code License.
 * 
 */

#include <fcntl.h>
#include <malloc.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <sys/uio.h>
#include <unistd.h>

#include <media/Buffer.h>
#include <media/BufferGroup.h>
#include <media/ParameterWeb.h>
#include <media/TimeSource.h>

#include <support/Autolock.h>
#include <support/Debug.h>

#define TOUCH(x) ((void)(x))

#define PRINTF(a,b) \
                do { \
                        if (a < 2) { \
                                printf("VideoProducer::"); \
                                printf b; \
                        } \
                } while (0)

#include "Producer.h"

#define FIELD_RATE 30.f

const float kUSBBandWidthMin = 0.5f;
const float kUSBBandWidthMax = 7.5f;
const float kUSBBandWidthStep = 0.5f;

const float kVScreenOffsetMin = 0.f;
const float kVScreenOffsetMax = 4.f;
const float kVScreenOffsetStep = 1.f;
const float kHScreenOffsetMin = 0.f;
const float kHScreenOffsetMax = 4.f;
const float kHScreenOffsetStep = 1.f;

const float kEffectMin = 0.f;
const float kEffectMax = 31.f;
const float kEffectStep = 1.f;

const float kBrightnessMin = kEffectMin;
const float kBrightnessMax = kEffectMax;
const float kBrightnessStep = kEffectStep;

const float kContrastMin = kEffectMin;
const float kContrastMax = kEffectMax;
const float kContrastStep = kEffectStep;

const float kHueMin = kEffectMin;
const float kHueMax = kEffectMax;
const float kHueStep = kEffectStep;

const float kSaturationMin = kEffectMin;
const float kSaturationMax = kEffectMax;
const float kSaturationStep = kEffectStep;

const uint32        kDefChannel = 0;
//const VideoInput    kDefVideoInput = P_VI_TUNER;
const uint32        kDefAudioInput = 0;
const uint32        kDefBrightness = 20;
const uint32        kDefContrast = 22;
const uint32        kDefSaturation = 15;
const uint32        kDefHue = 20;
const uint32        kDefCaptureSize = 0;
const uint32        kDefCaptureFormat = 0;
//const VideoStandard kDefStandard = P_VF_PAL_BDGHI;
const float         kDefBandwidth = 7.0;
const uint32        kDefLocale = 0;
const uint32        kDefVertOffset = 1;
const uint32        kDefHorzOffset = 2;

int32 VideoProducer::fInstances = 0;

VideoProducer::VideoProducer(
                BMediaAddOn *addon, const char *name, int32 internal_id)
  :     BMediaNode(name),
        BMediaEventLooper(),
        BBufferProducer(B_MEDIA_RAW_VIDEO),
        BControllable()
{
        status_t err;

        fInitStatus = B_NO_INIT;

        /* Only allow one instance of the node to exist at any time */
        if (atomic_add(&fInstances, 1) != 0)
                return;

        fInternalID = internal_id;
        fAddOn = addon;

        fBufferGroup = NULL;

        fThread = -1;
        fFrameSync = -1;
        fProcessingLatency = 0LL;

        fRunning = false;
        fConnected = false;
        fEnabled = false;

        fOutput.destination = media_destination::null;

        AddNodeKind(B_PHYSICAL_INPUT);

        fInitStatus = B_OK;

    //debugger("op-op");
    
    status_t status = Locale::TunerLocale::LoadLocales(fLocales);    
    
    printf("LoadLocales:%08x\n", status);

        fChannel = kDefChannel;
    fVideoInput = P_VI_TUNER; 
        fAudioInput = kDefAudioInput;
    fBrightness = kDefBrightness;
        fContrast = kDefContrast; 
        fSaturation = kDefSaturation; 
        fHue = kDefHue; 
    fCaptureSize = kDefCaptureSize; 
    fCaptureFormat = kDefCaptureFormat; 
    fStandard = P_VF_PAL_BDGHI; 
        fLocale = kDefLocale; 
    fBandwidth = kDefBandwidth; 
    fVertOffset = kDefVertOffset; 
        fHorzOffset = kDefHorzOffset; 
    fColor = B_HOST_TO_LENDIAN_INT32(0x00ff0000);

        fLastChannelChange = 
        fLastVideoInputChange = 
        fLastAudioInputChange = 
        fLastBrightnessChange = 
        fLastContrastChange = 
        fLastSaturationChange = 
        fLastHueChange = 
        fLastCaptureSizeChange = 
        fLastCaptureFormatChange = 
        fLastStandardChange = 
        fLastLocaleChange = 
        fLastBandwidthChange = 
        fLastVertOffsetChange = 
        fLastHorzOffsetChange = 
        fLastColorChange = system_time();

        return;
}

VideoProducer::~VideoProducer()
{
        if (fInitStatus == B_OK) {
                /* Clean up after ourselves, in case the application didn't make us
                 * do so. */
                if (fConnected)
                        Disconnect(fOutput.source, fOutput.destination);
                if (fRunning)
                        HandleStop();
        }

        atomic_add(&fInstances, -1);

    Locale::TunerLocale::ReleaseLocales(fLocales);    
}

/* BMediaNode */

port_id
VideoProducer::ControlPort() const
{
        return BMediaNode::ControlPort();
}

BMediaAddOn *
VideoProducer::AddOn(int32 *internal_id) const
{
        if (internal_id)
                *internal_id = fInternalID;
        return fAddOn;
}

status_t 
VideoProducer::HandleMessage(int32 message, const void *data, size_t size)
{
        return B_ERROR;
}

void 
VideoProducer::Preroll()
{
        /* This hook may be called before the node is started to give the hardware
         * a chance to start. */
}

void
VideoProducer::SetTimeSource(BTimeSource *time_source)
{
        /* Tell frame generation thread to recalculate delay value */
        release_sem(fFrameSync);
}

status_t
VideoProducer::RequestCompleted(const media_request_info &info)
{
        return BMediaNode::RequestCompleted(info);
}

/* BMediaEventLooper */

void 
VideoProducer::NodeRegistered()
{
        if (fInitStatus != B_OK) {
                ReportError(B_NODE_IN_DISTRESS);
                return;
        }

        /* After this call, the BControllable owns the BParameterWeb object and
         * will delete it for you */
        SetParameterWeb(CreateParameterWeb());

        fOutput.node = Node();
        fOutput.source.port = ControlPort();
        fOutput.source.id = 0;
        fOutput.destination = media_destination::null;
        strcpy(fOutput.name, Name());   

        /* Tailor these for the output of your device */
        fOutput.format.type = B_MEDIA_RAW_VIDEO;
        fOutput.format.u.raw_video = media_raw_video_format::wildcard;
        fOutput.format.u.raw_video.interlace = 1;
        fOutput.format.u.raw_video.display.format = B_RGB32;

        /* Start the BMediaEventLooper control loop running */
        Run();
}

BParameterWeb  *VideoProducer::CreateParameterWeb()
{
        /* Set up the parameter web */
        BParameterWeb *web = new BParameterWeb();

        BParameterGroup *controls = web->MakeGroup("Controls");
        BParameterGroup *group = controls->MakeGroup("Main Controls");
        BDiscreteParameter *parameter = group->MakeDiscreteParameter(
                        P_CHANNEL, B_MEDIA_NO_TYPE, "Channel:", B_GENERIC);
        for(int i = 0; i < fLocales[fLocale]->ChannelsCount(); i ++){
          parameter->AddItem(i, (fLocales[fLocale]->GetChannel(i)).Name().c_str());
        }
        
        parameter = group->MakeDiscreteParameter(
                                    P_VIDEO_INPUT, B_MEDIA_NO_TYPE, "Video Input:", B_INPUT_MUX);
        parameter->AddItem(P_VI_TUNER, "Tuner");
        parameter->AddItem(P_VI_COMPOSITE, "Composite");
        parameter->AddItem(P_VI_SVIDEO, "SVideo");

        parameter = group->MakeDiscreteParameter(
                        P_AUDIO_INPUT, B_MEDIA_NO_TYPE, "Audio Input:", B_INPUT_MUX);
        parameter->AddItem(1, "TODO");
        parameter->AddItem(2, "TODO");
        parameter->AddItem(3, "TODO");

        group = controls->MakeGroup("Effect Controls");
        group->MakeContinuousParameter(
                               P_BRIGHTNESS, B_MEDIA_NO_TYPE, "Brightness", B_LEVEL,
                                 "", kBrightnessMin, kBrightnessMax, kBrightnessStep);

        group->MakeContinuousParameter(
                               P_CONTRAST, B_MEDIA_NO_TYPE, "Contrast", B_LEVEL,
                                 "", kContrastMin, kContrastMax, kContrastStep);

        group = controls->MakeGroup("Adv. Effect Controls");
        group->MakeContinuousParameter(
                               P_SATURATION, B_MEDIA_NO_TYPE, "Saturation", B_LEVEL,
                                 "", kSaturationMin, kSaturationMax, kSaturationStep);

        group->MakeContinuousParameter(
                               P_HUE, B_MEDIA_NO_TYPE, "Hue", B_LEVEL,
                                 "", kHueMin, kHueMax, kHueStep);

    BParameterGroup *options = web->MakeGroup("Options");
        group = options->MakeGroup("Capture Option");
        parameter = group->MakeDiscreteParameter(
                        P_CAPTURE_SIZE, B_MEDIA_NO_TYPE, "Capture Size:", B_RESOLUTION);
        parameter->AddItem(1, "TODO");
        parameter->AddItem(2, "TODO");

        parameter = group->MakeDiscreteParameter(
                        P_CAPTURE_FORMAT, B_MEDIA_NO_TYPE, "Capture Format:", B_COLOR_SPACE);
        parameter->AddItem(1, "TODO");
        parameter->AddItem(2, "TODO");

        BParameterGroup *hardware = web->MakeGroup("Hardware Setup");
        group = hardware->MakeGroup("Format");
        parameter = group->MakeDiscreteParameter(
                        P_STANDART, B_MEDIA_NO_TYPE, "Video Format:", B_VIDEO_FORMAT);
        parameter->AddItem(P_VF_NTSC_M, "NTSC M");
        parameter->AddItem(P_VF_NTSC_MJ, "NTSC MJ");
        parameter->AddItem(P_VF_PAL_BDGHI, "PAL BDGHI");
        parameter->AddItem(P_VF_PAL_M, "PAL M");
        parameter->AddItem(P_VF_PAL_N, "PAL N");
        parameter->AddItem(P_VF_SECAM, "SECAM");

        parameter = group->MakeDiscreteParameter(
                        P_LOCALE, B_MEDIA_NO_TYPE, "Tuner Locale:", B_GENERIC);
        for(int i = 0; i < fLocales.size(); i++)
          parameter->AddItem(i, fLocales[i]->Name().c_str());
        
  group = hardware->MakeGroup("Format");
        
        group->MakeContinuousParameter(
                               P_BANDWIDTH, B_MEDIA_NO_TYPE, "Max.Bandwidth", B_LEVEL,
                                 "", kUSBBandWidthMin, kUSBBandWidthMax, kUSBBandWidthStep);

        group = hardware->MakeGroup("Offsets");
        
        group->MakeContinuousParameter(
                               P_VERT_OFFSET, B_MEDIA_NO_TYPE, "Vertical Offset", B_LEVEL,
                                 "", kVScreenOffsetMin, kVScreenOffsetMax, kVScreenOffsetStep);

        group->MakeContinuousParameter(
                               P_HORZ_OFFSET, B_MEDIA_NO_TYPE, "Horizontal Offset", B_LEVEL,
                                 "", kHScreenOffsetMin, kHScreenOffsetMax, kHScreenOffsetStep);

        BParameterGroup *main = web->MakeGroup(Name());
        BDiscreteParameter *state = main->MakeDiscreteParameter(
                        P_COLOR, B_MEDIA_RAW_VIDEO, "Color", "Color");
        state->AddItem(B_HOST_TO_LENDIAN_INT32(0x00ff0000), "Red");
        state->AddItem(B_HOST_TO_LENDIAN_INT32(0x0000ff00), "Green");
        state->AddItem(B_HOST_TO_LENDIAN_INT32(0x000000ff), "Blue");

    return web; 
}

void
VideoProducer::Start(bigtime_t performance_time)
{
        BMediaEventLooper::Start(performance_time);
}

void
VideoProducer::Stop(bigtime_t performance_time, bool immediate)
{
        BMediaEventLooper::Stop(performance_time, immediate);
}

void
VideoProducer::Seek(bigtime_t media_time, bigtime_t performance_time)
{
        BMediaEventLooper::Seek(media_time, performance_time);
}

void
VideoProducer::TimeWarp(bigtime_t at_real_time, bigtime_t to_performance_time)
{
        BMediaEventLooper::TimeWarp(at_real_time, to_performance_time);
}

status_t
VideoProducer::AddTimer(bigtime_t at_performance_time, int32 cookie)
{
        return BMediaEventLooper::AddTimer(at_performance_time, cookie);
}

void
VideoProducer::SetRunMode(run_mode mode)
{
        BMediaEventLooper::SetRunMode(mode);
}

void 
VideoProducer::HandleEvent(const media_timed_event *event,
                bigtime_t lateness, bool realTimeEvent)
{
        TOUCH(lateness); TOUCH(realTimeEvent);

        switch(event->type)
        {
                case BTimedEventQueue::B_START:
                        HandleStart(event->event_time);
                        break;
                case BTimedEventQueue::B_STOP:
                        HandleStop();
                        break;
                case BTimedEventQueue::B_WARP:
                        HandleTimeWarp(event->bigdata);
                        break;
                case BTimedEventQueue::B_SEEK:
                        HandleSeek(event->bigdata);
                        break;
                case BTimedEventQueue::B_PARAMETER:
                        HandleParameter(event->data);
                        break;
                case BTimedEventQueue::B_HANDLE_BUFFER:
                case BTimedEventQueue::B_DATA_STATUS:
                default:
                        PRINTF(-1, ("HandleEvent: Unhandled event -- %lx\n", event->type));
                        break;
        }
}

void 
VideoProducer::CleanUpEvent(const media_timed_event *event)
{
        BMediaEventLooper::CleanUpEvent(event);
}

bigtime_t
VideoProducer::OfflineTime()
{
        return BMediaEventLooper::OfflineTime();
}

void
VideoProducer::ControlLoop()
{
        BMediaEventLooper::ControlLoop();
}

status_t
VideoProducer::DeleteHook(BMediaNode * node)
{
        return BMediaEventLooper::DeleteHook(node);
}

/* BBufferProducer */

status_t 
VideoProducer::FormatSuggestionRequested(
                media_type type, int32 quality, media_format *format)
{
        if (type != B_MEDIA_ENCODED_VIDEO)
                return B_MEDIA_BAD_FORMAT;

        TOUCH(quality);

        *format = fOutput.format;
        return B_OK;
}

status_t 
VideoProducer::FormatProposal(const media_source &output, media_format *format)
{
        status_t err;

        if (!format)
                return B_BAD_VALUE;

        if (output != fOutput.source)
                return B_MEDIA_BAD_SOURCE;

        err = format_is_compatible(*format, fOutput.format) ?
                        B_OK : B_MEDIA_BAD_FORMAT;
        *format = fOutput.format;
        return err;
                
}

status_t 
VideoProducer::FormatChangeRequested(const media_source &source,
                const media_destination &destination, media_format *io_format,
                int32 *_deprecated_)
{
        TOUCH(destination); TOUCH(io_format); TOUCH(_deprecated_);
        if (source != fOutput.source)
                return B_MEDIA_BAD_SOURCE;
                
        return B_ERROR; 
}

status_t 
VideoProducer::GetNextOutput(int32 *cookie, media_output *out_output)
{
        if (!out_output)
                return B_BAD_VALUE;

        if ((*cookie) != 0)
                return B_BAD_INDEX;
        
        *out_output = fOutput;
        (*cookie)++;
        return B_OK;
}

status_t 
VideoProducer::DisposeOutputCookie(int32 cookie)
{
        TOUCH(cookie);

        return B_OK;
}

status_t 
VideoProducer::SetBufferGroup(const media_source &for_source,
                BBufferGroup *group)
{
        TOUCH(for_source); TOUCH(group);

        return B_ERROR;
}

status_t 
VideoProducer::VideoClippingChanged(const media_source &for_source,
                int16 num_shorts, int16 *clip_data,
                const media_video_display_info &display, int32 *_deprecated_)
{
        TOUCH(for_source); TOUCH(num_shorts); TOUCH(clip_data);
        TOUCH(display); TOUCH(_deprecated_);

        return B_ERROR;
}

status_t 
VideoProducer::GetLatency(bigtime_t *out_latency)
{
        *out_latency = EventLatency() + SchedulingLatency();
        return B_OK;
}

status_t 
VideoProducer::PrepareToConnect(const media_source &source,
                const media_destination &destination, media_format *format,
                media_source *out_source, char *out_name)
{
        status_t err;

        PRINTF(1, ("PrepareToConnect() %ldx%ld\n", \
                        format->u.raw_video.display.line_width, \
                        format->u.raw_video.display.line_count));

        if (fConnected) {
                PRINTF(0, ("PrepareToConnect: Already connected\n"));
                return EALREADY;
        }

        if (source != fOutput.source)
                return B_MEDIA_BAD_SOURCE;
        
        if (fOutput.destination != media_destination::null)
                return B_MEDIA_ALREADY_CONNECTED;

        /* The format parameter comes in with the suggested format, and may be
         * specialized as desired by the node */
        if (!format_is_compatible(*format, fOutput.format)) {
                *format = fOutput.format;
                return B_MEDIA_BAD_FORMAT;
        }

        if (format->u.raw_video.display.line_width == 0)
                format->u.raw_video.display.line_width = 320;
        if (format->u.raw_video.display.line_count == 0)
                format->u.raw_video.display.line_count = 240;
        if (format->u.raw_video.field_rate == 0)
                format->u.raw_video.field_rate = 29.97f;

        *out_source = fOutput.source;
        strcpy(out_name, fOutput.name);

        fOutput.destination = destination;

        return B_OK;
}

void 
VideoProducer::Connect(status_t error, const media_source &source,
                const media_destination &destination, const media_format &format,
                char *io_name)
{
        PRINTF(1, ("Connect() %ldx%ld\n", \
                        format.u.raw_video.display.line_width, \
                        format.u.raw_video.display.line_count));

        if (fConnected) {
                PRINTF(0, ("Connect: Already connected\n"));
                return;
        }

        if (    (source != fOutput.source) || (error < B_OK) ||
                        !const_cast<media_format *>(&format)->Matches(&fOutput.format)) {
                PRINTF(1, ("Connect: Connect error\n"));
                return;
        }

        fOutput.destination = destination;
        strcpy(io_name, fOutput.name);

        if (fOutput.format.u.raw_video.field_rate != 0.0f) {
                fPerformanceTimeBase = fPerformanceTimeBase +
                                (bigtime_t)
                                        ((fFrame - fFrameBase) *
                                        (1000000 / fOutput.format.u.raw_video.field_rate));
                fFrameBase = fFrame;
        }
        
        fConnectedFormat = format.u.raw_video;

        /* get the latency */
        bigtime_t latency = 0;
        media_node_id tsID = 0;
        FindLatencyFor(fOutput.destination, &latency, &tsID);
        #define NODE_LATENCY 1000
        SetEventLatency(latency + NODE_LATENCY);

        uint32 *buffer, *p, f = 3;
        p = buffer = (uint32 *)malloc(4 * fConnectedFormat.display.line_count *
                        fConnectedFormat.display.line_width);
        if (!buffer) {
                PRINTF(0, ("Connect: Out of memory\n"));
                return;
        }
        bigtime_t now = system_time();
        for (int y=0;y<fConnectedFormat.display.line_count;y++)
                for (int x=0;x<fConnectedFormat.display.line_width;x++)
                        *(p++) = ((((x+y)^0^x)+f) & 0xff) * (0x01010101 & fColor);
        fProcessingLatency = system_time() - now;
        free(buffer);

        /* Create the buffer group */
        fBufferGroup = new BBufferGroup(4 * fConnectedFormat.display.line_width *
                        fConnectedFormat.display.line_count, 8);
        if (fBufferGroup->InitCheck() < B_OK) {
                delete fBufferGroup;
                fBufferGroup = NULL;
                return;
        }

        fConnected = true;
        fEnabled = true;

        /* Tell frame generation thread to recalculate delay value */
        release_sem(fFrameSync);
}

void 
VideoProducer::Disconnect(const media_source &source,
                const media_destination &destination)
{
        PRINTF(1, ("Disconnect()\n"));

        if (!fConnected) {
                PRINTF(0, ("Disconnect: Not connected\n"));
                return;
        }

        if ((source != fOutput.source) || (destination != fOutput.destination)) {
                PRINTF(0, ("Disconnect: Bad source and/or destination\n"));
                return;
        }

        fEnabled = false;
        fOutput.destination = media_destination::null;

        fLock.Lock();
                delete fBufferGroup;
                fBufferGroup = NULL;
        fLock.Unlock();

        fConnected = false;
}

void 
VideoProducer::LateNoticeReceived(const media_source &source,
                bigtime_t how_much, bigtime_t performance_time)
{
        TOUCH(source); TOUCH(how_much); TOUCH(performance_time);
}

void 
VideoProducer::EnableOutput(const media_source &source, bool enabled,
                int32 *_deprecated_)
{
        TOUCH(_deprecated_);

        if (source != fOutput.source)
                return;

        fEnabled = enabled;
}

status_t 
VideoProducer::SetPlayRate(int32 numer, int32 denom)
{
        TOUCH(numer); TOUCH(denom);

        return B_ERROR;
}

void 
VideoProducer::AdditionalBufferRequested(const media_source &source,
                media_buffer_id prev_buffer, bigtime_t prev_time,
                const media_seek_tag *prev_tag)
{
        TOUCH(source); TOUCH(prev_buffer); TOUCH(prev_time); TOUCH(prev_tag);
}

void 
VideoProducer::LatencyChanged(const media_source &source,
                const media_destination &destination, bigtime_t new_latency,
                uint32 flags)
{
        TOUCH(source); TOUCH(destination); TOUCH(new_latency); TOUCH(flags);
}

/* BControllable */                                                                     

status_t 
VideoProducer::GetParameterValue(
        int32 id, bigtime_t *last_change, void *value, size_t *size)
{
  switch(id){
  case P_CHANNEL:
        *last_change = fLastChannelChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fChannel;
      break;
                case P_VIDEO_INPUT:
        *last_change = fLastVideoInputChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fVideoInput;
      break;
    case P_AUDIO_INPUT:
        *last_change = fLastAudioInputChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fAudioInput;
      break;
    case P_BRIGHTNESS:
        *last_change = fLastBrightnessChange;
        *size = sizeof(float);
            *((float *)value) = fBrightness;
      break;
    case P_CONTRAST:
        *last_change = fLastContrastChange;
        *size = sizeof(float);
            *((float*)value) = fContrast;
      break;
    case P_SATURATION:
        *last_change = fLastSaturationChange;
        *size = sizeof(float);
            *((float*)value) = fSaturation;
      break;
    case P_HUE:
        *last_change = fLastHueChange;
        *size = sizeof(float);
            *((float*)value) = fHue;
      break;
    case P_CAPTURE_SIZE:
        *last_change = fLastCaptureSizeChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fCaptureSize;
      break;
    case P_CAPTURE_FORMAT:
        *last_change = fLastCaptureFormatChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fCaptureFormat;
      break;
    case P_STANDART:
        *last_change = fLastStandardChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fStandard;
      break;
    case P_BANDWIDTH:
        *last_change = fLastBandwidthChange;
        *size = sizeof(float);
            *((float *)value) = fBandwidth;
      break;
    case P_LOCALE:
        *last_change = fLastLocaleChange;
        *size = sizeof(uint32);
            *((uint32*)value) = fLocale;
      break;
    case P_VERT_OFFSET:
        *last_change = fLastVertOffsetChange;
        *size = sizeof(float);
            *((float*)value) = fVertOffset;
      break;
    case P_HORZ_OFFSET:
        *last_change = fLastHorzOffsetChange;
        *size = sizeof(float);
            *((float*)value) = fHorzOffset;
      break;
    case P_COLOR:
            *last_change = fLastColorChange;
            *size = sizeof(uint32);
            *((uint32 *)value) = fColor;
      break;
    default:
      return B_BAD_VALUE;
  }
        return B_OK;
}

void
VideoProducer::SetParameterValue(
        int32 id, bigtime_t when, const void *value, size_t size)
{
  switch(id){
        case P_CHANNEL:
    if (*(uint32 *)value != fChannel){
              fChannel = *(uint32 *)value;
              fLastChannelChange = when;
              BroadcastNewParameterValue(
            fLastChannelChange, P_CHANNEL, &fChannel, sizeof(fChannel));
      }
      break;
                case P_VIDEO_INPUT:
      if (*(uint32 *)value != fVideoInput){
              fVideoInput = *(uint32 *)value;
              fLastVideoInputChange = when;
              BroadcastNewParameterValue(
            fLastVideoInputChange, P_VIDEO_INPUT, &fVideoInput, sizeof(fVideoInput));
      }
      break;
    case P_AUDIO_INPUT:
      if (*(uint32 *)value != fAudioInput){
              fAudioInput = *(uint32 *)value;
              fLastAudioInputChange = when;
              BroadcastNewParameterValue(
            fLastAudioInputChange, P_AUDIO_INPUT, &fAudioInput, sizeof(fAudioInput));
      }
      break;
    case P_BRIGHTNESS:
      if (*(float *)value != fBrightness){
              fBrightness = *(float *)value;
              fLastBrightnessChange = when;
              BroadcastNewParameterValue(
            fLastBrightnessChange, P_BRIGHTNESS, &fBrightness, sizeof(fBrightness));
      }
      break;
    case P_CONTRAST:
      if (*(float *)value != fContrast){
              fContrast = *(float *)value;
              fLastContrastChange = when;
              BroadcastNewParameterValue(
            fLastContrastChange, P_CONTRAST, &fContrast, sizeof(fContrast));
      }
      break;
    case P_SATURATION:
      if (*(float *)value != fSaturation){
              fSaturation = *(float *)value;
              fLastSaturationChange = when;
              BroadcastNewParameterValue(
            fLastSaturationChange, P_SATURATION, &fSaturation, sizeof(fSaturation));
      }
      break;
    case P_HUE:
      if (*(float *)value != fHue){
              fHue = *(float *)value;
              fLastHueChange = when;
              BroadcastNewParameterValue(
            fLastHueChange, P_HUE, &fHue, sizeof(fHue));
      }
      break;
    case P_CAPTURE_SIZE:
      if (*(uint32 *)value != fCaptureSize){
              fCaptureSize = *(uint32*)value;
              fLastCaptureSizeChange = when;
              BroadcastNewParameterValue(
            fLastCaptureSizeChange, P_CAPTURE_SIZE, &fCaptureSize, sizeof(fCaptureSize));
      }
      break;
    case P_CAPTURE_FORMAT:
      if (*(uint32 *)value != fCaptureFormat){
              fCaptureFormat = *(uint32*)value;
              fLastCaptureFormatChange = when;
              BroadcastNewParameterValue(
            fLastCaptureFormatChange, P_CAPTURE_FORMAT, &fCaptureFormat, sizeof(fCaptureFormat));
      }
      break;
    case P_STANDART:
      if (*(uint32 *)value != fStandard){
              fStandard = *(uint32*)value;
              fLastStandardChange = when;
              BroadcastNewParameterValue(
            fLastStandardChange, P_STANDART, &fStandard, sizeof(fStandard));
      }
      break;
    case P_BANDWIDTH:
      if (*(float *)value != fBandwidth){
              fBandwidth = *(float *)value;
              fLastBandwidthChange = when;
              BroadcastNewParameterValue(
            fLastBandwidthChange, P_BANDWIDTH, &fBandwidth, sizeof(fBandwidth));
      }
      break;
    case P_LOCALE:
      if (*(uint32 *)value != fLocale){
              fLocale = *(uint32 *)value;
              fLastLocaleChange = when;
              BroadcastNewParameterValue(
            fLastLocaleChange, P_LOCALE, &fLocale, sizeof(fLocale));
      }
      break;
    case P_VERT_OFFSET:
      if (*(float*)value != fVertOffset){
              fVertOffset = *(float *)value;
              fLastVertOffsetChange = when;
              BroadcastNewParameterValue(
            fLastVertOffsetChange, P_VERT_OFFSET, &fVertOffset, sizeof(fVertOffset));
      }
      break;
    case P_HORZ_OFFSET:
      if (*(float*)value != fHorzOffset){
              fHorzOffset = *(float *)value;
              fLastHorzOffsetChange = when;
              BroadcastNewParameterValue(
            fLastHorzOffsetChange, P_HORZ_OFFSET, &fHorzOffset, sizeof(fHorzOffset));
      }
      break;
    case P_COLOR:
      if (*(int32 *)value != fColor){
              fColor = *(uint32 *)value;
              fLastColorChange = when;
              BroadcastNewParameterValue(
            fLastColorChange, P_COLOR, &fColor, sizeof(fColor));
      }
      break;
  }
  
  EventQueue()->AddEvent(media_timed_event(when,
        BTimedEventQueue::B_PARAMETER, NULL,
        BTimedEventQueue::B_NO_CLEANUP, id, 0, NULL, 0));

}

status_t
VideoProducer::StartControlPanel(BMessenger *out_messenger)
{
        return BControllable::StartControlPanel(out_messenger);
}

/* VideoProducer */

void
VideoProducer::HandleStart(bigtime_t performance_time)
{
        /* Start producing frames, even if the output hasn't been connected yet. */

        PRINTF(1, ("HandleStart(%lld)\n", performance_time));

        if (fRunning) {
                PRINTF(-1, ("HandleStart: Node already started\n"));
                return;
        }

        fFrame = 0;
        fFrameBase = 0;
        fPerformanceTimeBase = performance_time;

        fFrameSync = create_sem(0, "frame synchronization");
        if (fFrameSync < B_OK)
                goto err1;

        fThread = spawn_thread(_frame_generator_, "frame generator",
                        B_NORMAL_PRIORITY, this);
        if (fThread < B_OK)
                goto err2;

        resume_thread(fThread);

        fRunning = true;
        return;

err2:
        delete_sem(fFrameSync);
err1:
        return;
}

void
VideoProducer::HandleStop(void)
{
        PRINTF(1, ("HandleStop()\n"));

        if (!fRunning) {
                PRINTF(-1, ("HandleStop: Node isn't running\n"));
                return;
        }

        delete_sem(fFrameSync);
        wait_for_thread(fThread, &fThread);

        fRunning = false;
}

void
VideoProducer::HandleTimeWarp(bigtime_t performance_time)
{
        fPerformanceTimeBase = performance_time;
        fFrameBase = fFrame;

        /* Tell frame generation thread to recalculate delay value */
        release_sem(fFrameSync);
}

void
VideoProducer::HandleSeek(bigtime_t performance_time)
{
        fPerformanceTimeBase = performance_time;
        fFrameBase = fFrame;

        /* Tell frame generation thread to recalculate delay value */
        release_sem(fFrameSync);
}

void
VideoProducer::HandleParameter(uint32 parameter)
{
  switch(parameter){
  case P_CHANNEL:
    break;
  case P_VIDEO_INPUT:
    break;
  case P_AUDIO_INPUT:
    break;
  case P_BRIGHTNESS:
    break;
  case P_CONTRAST:
    break;
  case P_SATURATION:
    break;
  case P_HUE:
    break;
  case P_CAPTURE_SIZE:
    break;
  case P_CAPTURE_FORMAT:
    break;
  case P_STANDART:
    break;
  case P_BANDWIDTH:
    break;
  case P_LOCALE:
    {
      //debugger("stop");
      BParameterWeb *web = Web();
      int nCount = web->CountParameters();
      for(int idx = 0; idx < nCount; idx++){
        BParameter *parameter = web->ParameterAt(idx);
        if(parameter && parameter->Type() == BParameter::B_DISCRETE_PARAMETER &&
                         parameter->ID() == P_CHANNEL){
          BDiscreteParameter * d_parameter = dynamic_cast<BDiscreteParameter *>(parameter);
          d_parameter->MakeEmpty();
          for(int i = 0; i < fLocales[fLocale]->ChannelsCount(); i ++){
                d_parameter->AddItem(i, (fLocales[fLocale]->GetChannel(i)).Name().c_str());
              }
              /*status_t st = BroadcastChangedParameter(P_CHANNEL);
          if(st != B_OK)
            debugger("kk");*/
          break;
        }
      }
    }
    break;
  case P_VERT_OFFSET:
    break;
  case P_HORZ_OFFSET:
    break;
  }
}

/* The following functions form the thread that generates frames. You should
 * replace this with the code that interfaces to your hardware. */
int32 
VideoProducer::FrameGenerator()
{
        bigtime_t wait_until = system_time();

        while (1) {
                status_t err = acquire_sem_etc(fFrameSync, 1, B_ABSOLUTE_TIMEOUT,
                                wait_until);

                /* The only acceptable responses are B_OK and B_TIMED_OUT. Everything
                 * else means the thread should quit. Deleting the semaphore, as in
                 * VideoProducer::HandleStop(), will trigger this behavior. */
                if ((err != B_OK) && (err != B_TIMED_OUT))
                        break;

                fFrame++;

                /* Recalculate the time until the thread should wake up to begin
                 * processing the next frame. Subtract fProcessingLatency so that
                 * the frame is sent in time. */
                wait_until = TimeSource()->RealTimeFor(fPerformanceTimeBase +
                                (bigtime_t)
                                                ((fFrame - fFrameBase) *
                                                (1000000 / fConnectedFormat.field_rate)), 0) -
                                fProcessingLatency;

                /* Drop frame if it's at least a frame late */
                if (wait_until < system_time())
                        continue;

                /* If the semaphore was acquired successfully, it means something
                 * changed the timing information (see VideoProducer::Connect()) and
                 * so the thread should go back to sleep until the newly-calculated
                 * wait_until time. */
                if (err == B_OK)
                        continue;

                /* Send buffers only if the node is running and the output has been
                 * enabled */
                if (!fRunning || !fEnabled)
                        continue;

                BAutolock _(fLock);

                /* Fetch a buffer from the buffer group */
                BBuffer *buffer = fBufferGroup->RequestBuffer(
                                                4 * fConnectedFormat.display.line_width *
                                                fConnectedFormat.display.line_count, 0LL);
                if (!buffer)
                        continue;

                /* Fill out the details about this buffer. */
                media_header *h = buffer->Header();
                h->type = B_MEDIA_RAW_VIDEO;
                h->time_source = TimeSource()->ID();
                h->size_used = 4 * fConnectedFormat.display.line_width *
                                                fConnectedFormat.display.line_count;
                /* For a buffer originating from a device, you might want to calculate
                 * this based on the PerformanceTimeFor the time your buffer arrived at
                 * the hardware (plus any applicable adjustments). */
                h->start_time = fPerformanceTimeBase +
                                                (bigtime_t)
                                                        ((fFrame - fFrameBase) *
                                                        (1000000 / fConnectedFormat.field_rate));
                h->file_pos = 0;
                h->orig_size = 0;
                h->data_offset = 0;
                h->u.raw_video.field_gamma = 1.0;
                h->u.raw_video.field_sequence = fFrame;
                h->u.raw_video.field_number = 0;
                h->u.raw_video.pulldown_number = 0;
                h->u.raw_video.first_active_line = 1;
                h->u.raw_video.line_count = fConnectedFormat.display.line_count;

                /* Fill in a pattern */
                uint32 *p = (uint32 *)buffer->Data();
                for (int y=0;y<fConnectedFormat.display.line_count;y++)
                        for (int x=0;x<fConnectedFormat.display.line_width;x++)
                                *(p++) = ((((x+y)^0^x)+fFrame) & 0xff) * (0x01010101 & fColor);

                /* Send the buffer on down to the consumer */
                if (SendBuffer(buffer, fOutput.destination) < B_OK) {
                        PRINTF(-1, ("FrameGenerator: Error sending buffer\n"));
                        /* If there is a problem sending the buffer, return it to its
                         * buffer group. */
                        buffer->Recycle();
                }
        }

        return B_OK;
}

int32
VideoProducer::_frame_generator_(void *data)
{
        return ((VideoProducer *)data)->FrameGenerator();
}