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21 lines
1.1 KiB
C
21 lines
1.1 KiB
C
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#ifndef COSMOPOLITAN_DSP_MPEG_BLOCKSET_H_
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#define COSMOPOLITAN_DSP_MPEG_BLOCKSET_H_
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#define PLM_BLOCK_SET(DEST, DEST_INDEX, DEST_WIDTH, SOURCE_INDEX, \
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SOURCE_WIDTH, BLOCK_SIZE, OP) \
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do { \
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int dest_scan = DEST_WIDTH - BLOCK_SIZE; \
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int source_scan = SOURCE_WIDTH - BLOCK_SIZE; \
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for (int y = 0; y < BLOCK_SIZE; y++) { \
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for (int x = 0; x < BLOCK_SIZE; x++) { \
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DEST[DEST_INDEX] = OP; \
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SOURCE_INDEX++; \
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DEST_INDEX++; \
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} \
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SOURCE_INDEX += source_scan; \
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DEST_INDEX += dest_scan; \
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} \
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} while (false)
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#endif /* COSMOPOLITAN_DSP_MPEG_BLOCKSET_H_ */
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