static int ReadConnectRejectMessage( URLContext * h, NetworkMessage *message )
{
SrvConnectRejectMsg * bodyPtr = NULL;
/* Allocate the message body */
if( (message->body = av_malloc( sizeof(SrvConnectRejectMsg) )) == NULL )
return AVERROR(ENOMEM);
/* Now read from the stream into the message */
bodyPtr = (SrvConnectRejectMsg *)message->body;
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->reason, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->timestamp, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)bodyPtr->macAddr, MAC_ADDR_LENGTH ) != MAC_ADDR_LENGTH )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->appVersion, sizeof(unsigned long) ) != sizeof(unsigned long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->minViewerVersion, sizeof(unsigned long) ) != sizeof(unsigned long) )
return AVERROR(EIO);
/* Correct the byte ordering */
bodyPtr->reason = av_be2ne32(bodyPtr->reason);
bodyPtr->timestamp = av_be2ne32(bodyPtr->timestamp);
bodyPtr->appVersion = av_be2ne32(bodyPtr->appVersion);
bodyPtr->minViewerVersion = av_be2ne32(bodyPtr->minViewerVersion);
return 0;
}
static void NToHMessageHeader( MessageHeader *header )
{
if( header ) {
header->magicNumber = av_be2ne32(header->magicNumber);
header->length = av_be2ne32(header->length);
header->channelID = av_be2ne32(header->channelID);
header->sequence = av_be2ne32(header->sequence);
header->messageVersion = av_be2ne32(header->messageVersion);
header->checksum = av_be2ne32(header->checksum);
header->messageType = av_be2ne32(header->messageType);
}
}
static int dspicProbe( AVProbeData *p )
{
long magicNumber = 0;
if( p->buf_size <= sizeof(long) )
return 0;
/* Get what should be the magic number field of the first header */
memcpy( &magicNumber, p->buf, sizeof(long) );
/* Adjust the byte ordering */
magicNumber = av_be2ne32(magicNumber);
if( magicNumber == DSPacketHeaderMagicNumber )
return AVPROBE_SCORE_MAX;
return 0;
}
static void HToNMessageHeader( MessageHeader *header, unsigned char *buf )
{
MessageHeader tempHeader;
int bufIdx = 0;
if( header != NULL && buf != NULL ) {
/* Set whatever header values we can in here */
tempHeader.magicNumber = av_be2ne32(header->magicNumber);
memcpy( &buf[bufIdx], &tempHeader.magicNumber, sizeof(unsigned long) );
bufIdx += sizeof(unsigned long);
tempHeader.length = av_be2ne32(header->length);
memcpy( &buf[bufIdx], &tempHeader.length, sizeof(unsigned long) );
bufIdx += sizeof(unsigned long);
tempHeader.channelID = av_be2ne32(header->channelID);
memcpy( &buf[bufIdx], &tempHeader.channelID, sizeof(long) );
bufIdx += sizeof(long);
tempHeader.sequence = av_be2ne32(header->sequence); /* Currently unsupported at server */
memcpy( &buf[bufIdx], &tempHeader.sequence, sizeof(long) );
bufIdx += sizeof(long);
tempHeader.messageVersion = av_be2ne32(header->messageVersion);
memcpy( &buf[bufIdx], &tempHeader.messageVersion, sizeof(unsigned long) );
bufIdx += sizeof(unsigned long);
tempHeader.checksum = av_be2ne32(header->checksum); /* As suggested in protocol documentation */
memcpy( &buf[bufIdx], &tempHeader.checksum, sizeof(long) );
bufIdx += sizeof(long);
tempHeader.messageType = av_be2ne32(header->messageType);
memcpy( &buf[bufIdx], &tempHeader.messageType, sizeof(long) );
bufIdx += sizeof(long);
}
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
const uint32_t *src = (const uint32_t *)avpkt->data;
AVFrame *pic = data;
int width = avctx->width;
int y = 0;
uint16_t *ydst, *udst, *vdst, *yend;
int ret;
if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
return AVERROR_INVALIDDATA;
}
if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
avpriv_request_sample(avctx, "(Probably) padded data");
}
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
ydst = (uint16_t *)pic->data[0];
udst = (uint16_t *)pic->data[1];
vdst = (uint16_t *)pic->data[2];
yend = ydst + width;
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
for (;;) {
uint32_t v = av_be2ne32(*src++);
*udst++ = (v >> 16) & 0xFFC0;
*ydst++ = (v >> 6 ) & 0xFFC0;
*vdst++ = (v << 4 ) & 0xFFC0;
v = av_be2ne32(*src++);
*ydst++ = (v >> 16) & 0xFFC0;
if (ydst >= yend) {
ydst += pic->linesize[0] / 2 - width;
udst += pic->linesize[1] / 2 - width / 2;
vdst += pic->linesize[2] / 2 - width / 2;
yend = ydst + width;
if (++y >= avctx->height)
break;
}
*udst++ = (v >> 6 ) & 0xFFC0;
*ydst++ = (v << 4 ) & 0xFFC0;
v = av_be2ne32(*src++);
*vdst++ = (v >> 16) & 0xFFC0;
*ydst++ = (v >> 6 ) & 0xFFC0;
if (ydst >= yend) {
ydst += pic->linesize[0] / 2 - width;
udst += pic->linesize[1] / 2 - width / 2;
vdst += pic->linesize[2] / 2 - width / 2;
yend = ydst + width;
if (++y >= avctx->height)
break;
}
*udst++ = (v << 4 ) & 0xFFC0;
v = av_be2ne32(*src++);
*ydst++ = (v >> 16) & 0xFFC0;
*vdst++ = (v >> 6 ) & 0xFFC0;
*ydst++ = (v << 4 ) & 0xFFC0;
if (ydst >= yend) {
ydst += pic->linesize[0] / 2 - width;
udst += pic->linesize[1] / 2 - width / 2;
vdst += pic->linesize[2] / 2 - width / 2;
yend = ydst + width;
if (++y >= avctx->height)
break;
}
}
*got_frame = 1;
return avpkt->size;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
{
int y=0;
int width= avctx->width;
AVFrame *pic= avctx->coded_frame;
const uint32_t *src= (const uint32_t *)avpkt->data;
uint16_t *ydst, *udst, *vdst, *yend;
if(pic->data[0])
avctx->release_buffer(avctx, pic);
if(avpkt->size < avctx->width * avctx->height * 8 / 3){
av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
return -1;
}
if(avpkt->size > avctx->width * avctx->height * 8 / 3){
av_log_ask_for_sample(avctx, "Probably padded data\n");
}
pic->reference= 0;
if(avctx->get_buffer(avctx, pic) < 0)
return -1;
ydst= (uint16_t *)pic->data[0];
udst= (uint16_t *)pic->data[1];
vdst= (uint16_t *)pic->data[2];
yend= ydst + width;
pic->pict_type= AV_PICTURE_TYPE_I;
pic->key_frame= 1;
for(;;){
uint32_t v= av_be2ne32(*src++);
*udst++= (v>>16) & 0xFFC0;
*ydst++= (v>>6 ) & 0xFFC0;
*vdst++= (v<<4 ) & 0xFFC0;
v= av_be2ne32(*src++);
*ydst++= (v>>16) & 0xFFC0;
if(ydst >= yend){
ydst+= pic->linesize[0]/2 - width;
udst+= pic->linesize[1]/2 - width/2;
vdst+= pic->linesize[2]/2 - width/2;
yend= ydst + width;
if(++y >= avctx->height)
break;
}
*udst++= (v>>6 ) & 0xFFC0;
*ydst++= (v<<4 ) & 0xFFC0;
v= av_be2ne32(*src++);
*vdst++= (v>>16) & 0xFFC0;
*ydst++= (v>>6 ) & 0xFFC0;
if(ydst >= yend){
ydst+= pic->linesize[0]/2 - width;
udst+= pic->linesize[1]/2 - width/2;
vdst+= pic->linesize[2]/2 - width/2;
yend= ydst + width;
if(++y >= avctx->height)
break;
}
*udst++= (v<<4 ) & 0xFFC0;
v= av_be2ne32(*src++);
*ydst++= (v>>16) & 0xFFC0;
*vdst++= (v>>6 ) & 0xFFC0;
*ydst++= (v<<4 ) & 0xFFC0;
if(ydst >= yend){
ydst+= pic->linesize[0]/2 - width;
udst+= pic->linesize[1]/2 - width/2;
vdst+= pic->linesize[2]/2 - width/2;
yend= ydst + width;
if(++y >= avctx->height)
break;
}
}
*data_size=sizeof(AVFrame);
*(AVFrame*)data= *avctx->coded_frame;
return avpkt->size;
}
static int ExtractDSFrameData( uint8_t * buffer, struct DMImageData *frameData )
{
int retVal = AVERROR(EIO);
int bufIdx = 0;
if( buffer != NULL ) {
memcpy( frameData->identifier, &buffer[bufIdx], ID_LENGTH );
bufIdx += ID_LENGTH;
memcpy( &frameData->jpegLength, &buffer[bufIdx], sizeof(unsigned long) );
bufIdx += sizeof(unsigned long);
frameData->jpegLength = av_be2ne32(frameData->jpegLength);
memcpy( &frameData->imgSeq, &buffer[bufIdx], sizeof(int64_t) );
bufIdx += sizeof(int64_t);
frameData->imgSeq = av_be2ne64(frameData->imgSeq);
memcpy( &frameData->imgTime, &buffer[bufIdx], sizeof(int64_t) );
bufIdx += sizeof(int64_t);
memcpy( &frameData->camera, &buffer[bufIdx], sizeof(unsigned char) );
bufIdx += sizeof(unsigned char);
memcpy( &frameData->status, &buffer[bufIdx], sizeof(unsigned char) );
bufIdx += sizeof(unsigned char);
memcpy( &frameData->activity, &buffer[bufIdx], sizeof(unsigned short) * NUM_ACTIVITIES );
bufIdx += sizeof(unsigned short) * NUM_ACTIVITIES;
memcpy( &frameData->QFactor, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->QFactor = av_be2ne16(frameData->QFactor);
memcpy( &frameData->height, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->height = av_be2ne16(frameData->height);
memcpy( &frameData->width, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->width = av_be2ne16(frameData->width);
memcpy( &frameData->resolution, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->resolution = av_be2ne16(frameData->resolution);
memcpy( &frameData->interlace, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->interlace = av_be2ne16(frameData->interlace);
memcpy( &frameData->subHeaderMask, &buffer[bufIdx], sizeof(unsigned short) );
bufIdx += sizeof(unsigned short);
frameData->subHeaderMask = av_be2ne16(frameData->subHeaderMask);
memcpy( frameData->camTitle, &buffer[bufIdx], sizeof(char) * CAM_TITLE_LENGTH );
bufIdx += sizeof(char) * CAM_TITLE_LENGTH;
memcpy( frameData->alarmText, &buffer[bufIdx], sizeof(char) * ALARM_TEXT_LENGTH );
bufIdx += sizeof(char) * ALARM_TEXT_LENGTH;
retVal = 0;
}
return retVal;
}
static int ReadConnectReplyMessage( URLContext * h, NetworkMessage *message )
{
SrvConnectReplyMsg * bodyPtr = NULL;
/* Allocate memory in which to store the message body */
if( (message->body = av_malloc( sizeof(SrvConnectReplyMsg) )) == NULL )
return AVERROR(ENOMEM);
bodyPtr = (SrvConnectReplyMsg *)message->body;
/* Now read the message body, a field at a time */
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->numCameras, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->viewableCamMask, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->telemetryCamMask, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->failedCamMask, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->maxMsgInterval, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->timestamp, sizeof(int64_t) ) != sizeof(int64_t) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)bodyPtr->cameraTitles, (16 * 28) ) != (16 * 28) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->unitType, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->applicationVersion, sizeof(unsigned long) ) != sizeof(unsigned long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->videoStandard, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)bodyPtr->macAddr, MAC_ADDR_LENGTH ) != MAC_ADDR_LENGTH )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)bodyPtr->unitName, UNIT_NAME_LENGTH ) != UNIT_NAME_LENGTH )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->numFixedRealms, sizeof(long) ) != sizeof(long) )
return AVERROR(EIO);
bodyPtr->numFixedRealms = av_be2ne32(bodyPtr->numFixedRealms);
if( DSReadBuffer( h, (uint8_t *)bodyPtr->realmFlags, (sizeof(unsigned long) * bodyPtr->numFixedRealms) ) != (sizeof(unsigned long) * bodyPtr->numFixedRealms) )
return AVERROR(EIO);
if( DSReadBuffer( h, (uint8_t *)&bodyPtr->minimumViewerVersion, sizeof(unsigned long) ) != sizeof(unsigned long) )
return AVERROR(EIO);
/* Correct the byte ordering */
bodyPtr->numCameras = av_be2ne32(bodyPtr->numCameras);
bodyPtr->viewableCamMask = av_be2ne32(bodyPtr->viewableCamMask);
bodyPtr->telemetryCamMask = av_be2ne32(bodyPtr->telemetryCamMask);
bodyPtr->failedCamMask = av_be2ne32(bodyPtr->failedCamMask);
bodyPtr->maxMsgInterval = av_be2ne32(bodyPtr->maxMsgInterval);
bodyPtr->unitType = av_be2ne32(bodyPtr->unitType);
bodyPtr->applicationVersion = av_be2ne32(bodyPtr->applicationVersion);
bodyPtr->videoStandard = av_be2ne32(bodyPtr->videoStandard);
bodyPtr->numFixedRealms = av_be2ne32(bodyPtr->numFixedRealms);
bodyPtr->minimumViewerVersion = av_be2ne32(bodyPtr->minimumViewerVersion);
return 0;
}