| 586 | | /* Handle simple case of eight bit data, and pixel interleaving. */ |
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| 587 | | /* -------------------------------------------------------------------- */ |
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| 588 | | int i, nBlockPixels, nWordBytes; |
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| 589 | | GByte *pabyImage; |
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| 590 | | |
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| 591 | | nWordBytes = poGDS->nBitsPerSample / 8; |
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| 592 | | pabyImage = poGDS->pabyBlockBuf + (nBand - 1) * nWordBytes; |
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| 593 | | |
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| 594 | | nBlockPixels = nBlockXSize * nBlockYSize; |
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| 595 | | for( i = 0; i < nBlockPixels; i++ ) |
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| 596 | | { |
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| 597 | | for( int j = 0; j < nWordBytes; j++ ) |
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| 598 | | { |
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| 599 | | pabyImage[j] = ((GByte *) pImage)[i*nWordBytes + j]; |
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| 600 | | } |
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| 601 | | pabyImage += poGDS->nBands * nWordBytes; |
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| | 586 | /* On write of pixel interleaved data, we might as well flush */ |
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| | 587 | /* out any other bands that are dirty in our cache. This is */ |
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| | 588 | /* especially helpful when writing compressed blocks. */ |
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| | 589 | /* -------------------------------------------------------------------- */ |
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| | 590 | int iBand; |
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| | 591 | int nWordBytes = poGDS->nBitsPerSample / 8; |
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| | 592 | |
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| | 593 | for( iBand = 0; iBand < poGDS->nBands; iBand++ ) |
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| | 594 | { |
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| | 595 | const GByte *pabyThisImage = NULL; |
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| | 596 | GDALRasterBlock *poBlock = NULL; |
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| | 597 | |
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| | 598 | if( iBand+1 == nBand ) |
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| | 599 | pabyThisImage = (GByte *) pImage; |
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| | 600 | else |
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| | 601 | { |
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| | 602 | poBlock = ((GTiffRasterBand *)poGDS->GetRasterBand( iBand+1 )) |
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| | 603 | ->TryGetLockedBlockRef( nBlockXOff, nBlockYOff ); |
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| | 604 | |
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| | 605 | if( poBlock == NULL ) |
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| | 606 | continue; |
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| | 607 | |
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| | 608 | if( !poBlock->GetDirty() ) |
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| | 609 | { |
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| | 610 | poBlock->DropLock(); |
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| | 611 | continue; |
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| | 612 | } |
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| | 613 | |
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| | 614 | pabyThisImage = (GByte *) poBlock->GetDataRef(); |
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| | 615 | } |
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| | 616 | |
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| | 617 | int i, nBlockPixels = nBlockXSize * nBlockYSize; |
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| | 618 | GByte *pabyOut = poGDS->pabyBlockBuf + iBand*nWordBytes; |
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| | 619 | |
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| | 620 | for( i = 0; i < nBlockPixels; i++ ) |
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| | 621 | { |
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| | 622 | memcpy( pabyOut, pabyThisImage, nWordBytes ); |
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| | 623 | |
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| | 624 | pabyOut += nWordBytes * poGDS->nBands; |
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| | 625 | pabyThisImage += nWordBytes; |
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| | 626 | } |
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| | 627 | |
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| | 628 | if( poBlock != NULL ) |
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| | 629 | { |
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| | 630 | poBlock->MarkClean(); |
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| | 631 | poBlock->DropLock(); |
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| | 632 | } |
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