54 lines
965 B
C
54 lines
965 B
C
#include "wave.h"
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int wave_ischunk(const unsigned char *start, const unsigned char *end, size_t *lengthptr)
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{
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size_t input_len = (size_t)(end - start);
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size_t length;
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if (input_len < WAVE_HEADER_SIZE)
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return 0;
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if (MAGIC(start) != RIFF_MAGIC)
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return 0;
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length = le32toh(*(const uint32_t *)(start + 4)) + 8;
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if (input_len < length)
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return 0;
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if (MAGIC(start + 8) != WAVE_MAGIC)
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return 0;
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if (lengthptr)
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*lengthptr = length;
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return 1;
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}
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int aiff_ischunk(const unsigned char *start, const unsigned char *end, size_t *lengthptr)
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{
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size_t input_len = (size_t)(end - start);
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size_t length;
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int16_t format;
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if (input_len < WAVE_HEADER_SIZE)
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return 0;
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if (MAGIC(start) != FORM_MAGIC)
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return 0;
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length = be32toh(*(const uint32_t *)(start + 4)) + 8;
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if (input_len < length)
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return 0;
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format = MAGIC(start + 8);
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if (format != AIFF_MAGIC && format != AIFC_MAGIC)
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return 0;
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if (lengthptr)
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*lengthptr = length;
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return 1;
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}
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